Application of Crash Modification Factors for Access Management, Volume 1: Practitioner's Guide (2021)

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140 This appendix provides a summary of each variable by land use and region. These summary statistics are used in aspects of the model application, such as identifying the applicable region and using default values for the models. 1. Identify Applicable Region: The summary statistics should be used to identify the region that is most-applicable to the local conditions. Users should compare summary statistics only for variables that are reasonably available and select the region that is most similar to their data. This selection will determine the intercept terms for the models as well as the default values for all variables. 2. Extrapolation of Models: The extrapolation of results between land use models requires the use of summary statistics for the land use and region of interest. A P P E N D I X D Summary Statistics by Land Use and Region Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 26 5.85 65.15 28.55 17.01 Injury Injury crashes/mile-year 26 0.69 19.35 7.81 4.57 Turning Turning crashes/mile-year 26 1.26 14.44 5.24 4.17 Rear-end Rear-end crashes/mile-year 26 1.38 33.84 13.29 9.34 Right-angle Right-angle crashes/mile-year 26 0.34 11.11 3.61 2.97 Proplane1 Proportion of total length with 2 lanes 26 0.00 0.76 0.07 0.20 Proplane2 Proportion of total length with 3 or 4 lanes 26 0.00 1.00 0.82 0.29 Proplane3 Proportion of total length with 5 or more lanes 26 0.00 1.00 0.11 0.24 Propdiv Proportion of total length with curb or raised concrete median 26 0.00 1.00 0.63 0.42 Proptwltl Proportion of total length with a TWLTL 26 0.00 1.00 0.30 0.42 Propundiv Proportion of total length with an undivided median 26 0.00 0.76 0.07 0.20 Propnodev Proportion of total length with no adjacent development 26 0.00 1.00 0.10 0.28 Proppartdev Proportion of total length with partial adjacent development 26 0.00 1.00 0.90 0.28 Propfulldev Proportion of total length with full adjacent development 26 0.00 0.00 0.00 0.00 Proplight Proportion of total length with illumination present 26 0.00 1.00 0.85 0.35 Proppoorpvmnt Proportion of total length with a poor pavement condition 26 0.00 1.00 0.05 0.20 Propvc Proportion of total length with visual clutter 26 0.00 1.00 0.06 0.20 Proplimconn Proportion of total length with limited connectivity on adjacent developments 26 0.00 1.00 0.23 0.35 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 26 0.00 1.00 0.21 0.34 Propsigconn Proportion of total length with significant connectivity on adjacent developments 26 0.00 1.00 0.56 0.44 Propfrontrd Proportion of total length with a frontage road 26 0.00 0.11 0.01 0.02 Drwydens Number of driveways/mile 26 1.47 38.93 12.85 10.23 Unsigdens Number of unsignalized intersections/mile 26 0.75 10.48 5.35 2.62 Table D-1. Summary statistics for North Carolina mixed-use land use. Mixed Use

Summary Statistics by Land Use and Region 141   Table D-2. Summary statistics for Minnesota mixed-use land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 18 7.22 105.94 38.81 28.87 Injury Injury crashes/mile-year 18 1.90 40.05 12.66 10.43 Turning Turning crashes/mile-year 18 0.09 10.16 2.92 2.73 Rear-end Rear-end crashes/mile-year 18 1.67 67.83 17.87 19.15 Right-angle Right-angle crashes/mile-year 18 1.30 22.95 7.05 5.47 Proplane1 Proportion of total length with 2 lanes 18 0.00 1.00 0.21 0.33 Proplane2 Proportion of total length with 3 or 4 lanes 18 0.00 1.00 0.79 0.33 Proplane3 Proportion of total length with 5 or more lanes 18 0.00 0.00 0.00 0.00 Propdiv Proportion of total length with curb or raised concrete median 18 0.00 1.00 0.61 0.43 Proptwltl Proportion of total length with a TWLTL 18 0.00 0.73 0.10 0.23 Table D-1. (Continued). Medopnolt Number of median openings without a left-turn lane 24 0.00 5.00 0.29 1.08 Speed_limit Posted speed limit (mi/h) 26 35 55 46 4.08 avgAADT Average AADT 26 3,100 40,428 19,806 8,679 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 10 379 1,265 676 287.27 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 10 281 1,265 647 312.34 Spcon Minimum spacing from on-ramp to available right-turn onto mainline from same side of road (ft) 11 0 1,939 646 625.47 Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Accdens Number of driveways plus unsignalized intersections/mile 26 2.26 46.92 18.20 11.96 Sigdens Number of signalized intersections/mile 26 0.73 4.74 2.45 1.10 Medopdens Number of median openings/mile 24 0.00 4.72 1.61 1.43 Nodrwys Number of driveways 26 3.00 112.00 28.31 29.16 Nocomfulldrwy Number of commercial full movement driveways 26 0.00 69.00 6.19 14.13 Noresfulldrwy Number of residential full movement driveways 26 0.00 88.00 9.04 17.54 Nocomlimdrwy Number of commercial limited movement driveways 26 0.00 20.00 6.54 6.24 Noreslimdrwy Number of residential limited movement driveways 26 0.00 40.00 6.54 12.01 Nounsig Number of unsignalized intersections 26 2.00 31.00 10.69 6.39 No3legunsig Number of 3-legged unsignalized intersections 26 1.00 27.00 7.77 5.46 No4legunsig Number of 4-legged unsignalized intersections 26 0.00 14.00 2.92 3.14 No5legunsig Number of 5-legged unsignalized intersections 26 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 26 0.00 25.00 5.31 5.42 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 26 0.00 9.00 2.88 2.30 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 26 0.00 8.00 2.81 2.19 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 26 0.00 1.00 0.08 0.27 No4legfullunsig Number of 4-legged full movement unsignalized intersections 26 0.00 7.00 2.12 1.99 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 26 0.00 2.00 0.27 0.67 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 26 0.00 1.00 0.08 0.27 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 26 0.00 2.00 0.19 0.49 Nortlunsig Number of unsignalized intersections with a right-turn lane 26 0.00 9.00 1.77 2.18 Noltlunsig Number of unsignalized intersections with a left-turn lane 26 0.00 29.00 7.08 6.90 Nosig Number of signalized intersections 26 1.00 14.00 5.04 2.86 Minspcsig Minimum spacing of signalized intersections (ft) 25 442 4,846 1,532 1,107 Maxspcsig Maximum spacing of signalized intersections (ft) 25 1,142 14,810 4,456 2,642 No3legsig Number of 3-legged signalized intersections 26 0.00 3.00 0.85 0.88 No4legsig Number of 4-legged signalized intersections 26 1.00 12.00 4.12 2.58 No5legsig Number of 5-legged signalized intersections 26 0.00 1.00 0.08 0.27 Nortlsig Number of signalized intersections with right-turn lane on mainline 26 0.00 9.00 2.85 2.05 Noltlsig Number of signalized intersections with left-turn lane on mainline 26 1.00 14.00 4.77 2.80 Nomedop Number of median openings 24 0.00 15.00 3.54 3.88 Medoplt 3.26 Number of median openings with a left-turn lane 24 0.00 12.00 3.25 (continued on next page)

142 Application of Crash Modification Factors for Access Management Nomedoplt Number of median openings with a left-turn lane 14 0.00 16.00 3.71 4.03 Nomedopnolt Number of median openings without a left-turn lane 14 0.00 3.00 0.36 0.93 Speed_limit Posted speed limit (mi/h) 18 30 60 42 10.18 avgAADT Average AADT 18 7,561 42,903 23,787 9,806 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 9 142 2,640 1,121 784 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 9 142 2,640 1,121 784 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 9 70 1,671 710 587 Propundiv Proportion of total length with an undivided median 18 0.00 1.00 0.29 0.40 Propnodev Proportion of total length with no adjacent development 18 0.00 0.14 0.01 0.03 Proppartdev Proportion of total length with partial adjacent development 18 0.00 1.00 0.85 0.28 Propfulldev Proportion of total length with full adjacent development 18 0.00 1.00 0.14 0.29 Proplight Proportion of total length with illumination present 18 0.00 1.00 0.57 0.48 Proppoorpvmnt Proportion of total length with a poor pavement condition 18 0.00 1.00 0.10 0.26 Propvc Proportion of total length with visual clutter 18 0.00 1.00 0.28 0.35 Proplimconn Proportion of total length with limited connectivity on adjacent developments 18 0.37 1.00 0.77 0.21 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 18 0.00 0.63 0.23 0.21 Propsigconn Proportion of total length with significant connectivity on adjacent developments 18 0.00 0.00 0.00 0.00 Propfrontrd Proportion of total length with a frontage road 18 0.12 1.00 0.70 0.31 Drwydens Number of driveways/mile 18 0.00 43.56 16.03 14.65 Unsigdens Number of unsignalized intersections/mile 18 0.80 14.93 6.75 4.81 Accdens Number of driveways plus unsignalized intersections/mile 18 1.07 58.49 22.79 19.03 Sigdens Number of signalized intersections/mile 18 0.76 6.78 2.93 1.46 Medopdens Number of median openings/mile 14 0.00 4.46 1.47 1.45 Nodrwys Number of driveways 18 0.00 127.00 37.11 39.23 Nocomfulldrwy Number of commercial full movement driveways 18 0.00 0.71 22.00 26.89 Noresfulldrwy Number of residential full movement driveways 18 0.00 38.00 7.89 12.16 Nocomlimdrwy Number of commercial limited movement driveways 18 0.00 31.00 6.11 10.37 Noreslimdrwy Number of residential limited movement driveways 18 0.00 6.00 1.11 1.91 Nounsig Number of unsignalized intersections 18 2.00 45.00 15.44 11.83 No3legunsig Number of 3-legged unsignalized intersections 18 1.00 23.00 10.28 6.47 No4legunsig Number of 4-legged unsignalized intersections 18 0.00 22.00 5.00 6.48 No5legunsig Number of 5-legged unsignalized intersections 18 0.00 1.00 0.11 0.32 No3legfullunsig Number of 3-legged full movement unsignalized intersections 18 0.00 18.00 6.28 6.29 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 18 0.00 12.00 4.00 4.00 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 18 0.00 11.00 3.44 3.58 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 18 0.00 2.00 0.56 0.70 No4legfullunsig Number of 4-legged full movement unsignalized intersections 18 0.00 22.00 5.00 6.48 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 18 0.00 0.00 0.00 0.00 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 18 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 18 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 18 0.00 11.00 3.39 3.29 Noltlunsig Number of unsignalized intersections with a left-turn lane 18 0.00 29.00 7.44 8.49 Nosig Number of signalized intersections 18 2.00 17.00 7.39 4.20 Minspcsig Minimum spacing of signalized intersections (ft) 18 250 5,285 1,160 1,303 Maxspcsig Maximum spacing of signalized intersections (ft) 18 299 9,744 3,635 2,057 No3legsig Number of 3-legged signalized intersections 18 0.00 4.00 1.00 1.41 No4legsig Number of 4-legged signalized intersections 18 2.00 17.00 6.28 3.85 No5legsig Number of 5-legged signalized intersections 18 0.00 2.00 0.11 0.47 Nortlsig Number of signalized intersections with a right-turn lane on mainline 18 1.00 10.00 4.39 3.07 Noltlsig Number of signalized intersections with a left-turn lane on mainline 18 0.00 14.00 6.11 3.72 Nomedop Number of median openings 14 0.00 16.00 4.07 4.21 Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Table D-2. (Continued).

Summary Statistics by Land Use and Region 143   Table D-3. Summary statistics for Northern California mixed-use land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 20 0.18 41.16 18.49 14.12 Injury Injury crashes/mile-year 20 0.09 19.56 8.66 6.30 Turning Turning crashes/mile-year 20 0.09 13.81 4.70 4.46 Rear-end Rear-end crashes/mile-year 20 0.09 21.12 8.44 7.05 Right-angle Right-angle crashes/mile-year 20 0.00 5.05 1.70 1.49 Proplane1 Proportion of total length with 2 lanes 20 0.00 1.00 0.15 0.32 Proplane2 Proportion of total length with 3 or 4 lanes 20 0.00 1.00 0.44 0.44 Proplane3 Proportion of total length with 5 or more lanes 20 0.00 1.00 0.41 0.46 Propdiv Proportion of total length with curb or raised concrete median 20 0.00 1.00 0.61 0.42 Proptwltl Proportion of total length with a TWLTL 20 0.00 0.68 0.10 0.20 Propundiv Proportion of total length with an undivided median 20 0.00 1.00 0.29 0.37 Propnodev Proportion of total length with no adjacent development 20 0.00 0.54 0.03 0.12 Proppartdev Proportion of total length with partial adjacent development 20 0.00 1.00 0.61 0.45 Propfulldev Proportion of total length with full adjacent development 20 0.00 1.00 0.36 0.45 Proplight Proportion of total length with illumination present 20 0.00 1.00 0.76 0.37 Proppoorpvmnt Proportion of total length with a poor pavement condition 20 0.00 1.00 0.07 0.23 Propvc Proportion of total length with visual clutter 20 0.00 1.00 0.20 0.38 Proplimconn Proportion of total length with limited connectivity on adjacent developments 20 0.00 1.00 0.30 0.39 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 20 0.00 1.00 0.42 0.39 Propsigconn Proportion of total length with significant connectivity on adjacent developments 20 0.00 1.00 0.28 0.37 Propfrontrd Proportion of total length with a frontage road 20 0.00 1.00 0.32 0.33 Drwydens Number of driveways/mile 20 0.00 108.53 42.70 26.19 Unsigdens Number of unsignalized intersections/mile 20 1.03 13.31 7.06 4.24 Accdens Number of driveways plus unsignalized intersections/mile 20 1.98 109.56 49.76 27.96 Sigdens Number of signalized intersections/mile 20 0.22 6.74 4.02 1.73 Medopdens Number of median openings/mile 20 0.00 4.67 1.47 1.58 Nodrwys Number of driveways 20 0.00 420.00 100.00 90.08 Nocomfulldrwy Number of commercial full movement driveways 20 0.00 81.00 20.15 27.38 Noresfulldrwy Number of residential full movement driveways 20 0.00 76.00 13.15 21.29 Nocomlimdrwy Number of commercial limited movement driveways 20 0.00 186.00 44.10 47.96 Noreslimdrwy Number of residential limited movement driveways 20 0.00 382.00 22.60 84.74 Nounsig Number of unsignalized intersections 20 2.00 36.00 14.75 10.55 No3legunsig Number of 3-legged unsignalized intersections 20 1.00 33.00 11.76 8.78 No4legunsig Number of 4-legged unsignalized intersections 20 0.00 28.00 3.00 6.16 No5legunsig Number of 5-legged unsignalized intersections 20 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 20 0.00 22.00 5.35 5.48 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 20 0.00 22.00 6.40 6.57 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 20 0.00 22.00 6.15 6.14 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 20 0.00 3.00 0.25 0.72 No4legfullunsig Number of 4-legged full movement unsignalized intersections 20 0.00 28.00 2.95 6.19 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 20 0.00 1.00 0.05 0.22 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 20 0.00 1.00 0.05 0.22 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 20 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 20 0.00 4.00 0.85 1.35 Noltlunsig Number of unsignalized intersections with a left-turn lane 20 0.00 20.00 4.85 5.19 Nosig Number of signalized intersections 20 1.00 24.00 9.15 6.23 Minspcsig Minimum spacing of signalized intersections (ft) 19 231 1,755 678 440 Maxspcsig Maximum spacing of signalized intersections (ft) 19 1,181 6,094 2,481 1,232 No3legsig Number of 3-legged signalized intersections 20 0.00 7.00 2.25 2.15 No4legsig Number of 4-legged signalized intersections 20 1.00 20.00 6.70 5.12 No5legsig Number of 5-legged signalized intersections 20 0.00 2.00 0.15 0.49 Nortlsig Number of signalized intersections with a right-turn lane on mainline 20 0.00 7.00 2.30 2.05 Noltlsig Number of signalized intersections with a left-turn lane on mainline 20 1.00 16.00 6.75 4.35 Nomedop 20 0.00 12.00 2.85 3.48 Number of median openings (continued on next page)

144 Application of Crash Modification Factors for Access Management Number of median openings with a left-turn lane 20 0.00 12.00 2.75 3.39 Nomedopnolt Number of median openings without a left-turn lane 20 0.00 1.00 0.10 0.31 Speed_limit Posted speed limit (mi/h) 20 30 55 40 7.05 avgAADT Average AADT 20 10,018 86,773 33,724 17,160 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 7 45 2,214 524 758 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 7 46 726 181 244 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 6 29 1,276 357 468 Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Nomedoplt Table D-4. Summary statistics for Southern California mixed-use land use. Table D-3. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 14 1.14 61.13 23.04 20.79 Injury Injury crashes/mile-year 14 1.14 24.87 10.51 7.34 Turning Turning crashes/mile-year 14 0.86 19.33 7.49 6.53 Rear-end Rear-end crashes/mile-year 14 0.00 30.07 8.37 8.89 Right-angle Right-angle crashes/mile-year 14 0.00 12.44 2.73 3.347 Proplane1 Proportion of total length with 2 lanes 14 0.00 0.00 0.00 0.00 Proplane2 Proportion of total length with 3 or 4 lanes 14 0.00 1.00 0.46 0.46 Proplane3 Proportion of total length with 5 or more lanes 14 0.00 1.00 0.54 0.46 Propdiv Proportion of total length with curb or raised concrete median 14 0.00 1.00 0.48 0.43 Proptwltl Proportion of total length with a TWLTL 14 0.00 0.86 0.16 0.26 Propundiv Proportion of total length with an undivided median 14 0.00 1.00 0.36 0.42 Propnodev Proportion of total length with no adjacent development 14 0.00 0.30 0.02 0.08 Proppartdev Proportion of total length with partial adjacent development 14 0.00 1.00 0.34 0.42 Propfulldev Proportion of total length with full adjacent development 14 0.00 1.00 0.64 0.41 Proplight Proportion of total length with illumination present 14 0.87 1.00 0.99 0.04 Proppoorpvmnt Proportion of total length with a poor pavement condition 14 0.00 0.00 0.00 0.00 Propvc Proportion of total length with visual clutter 14 0.00 1.00 0.81 0.29 Proplimconn Proportion of total length with limited connectivity on adjacent developments 14 0.00 1.00 0.74 0.36 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 14 0.00 1.00 0.24 0.36 Propsigconn Proportion of total length with significant connectivity on adjacent developments 14 0.00 0.28 0.03 0.08 Propfrontrd Proportion of total length with a frontage road 14 0.00 1.00 0.27 0.33 Drwydens Number of driveways/mile 14 20.10 81.55 44.75 17.37 Unsigdens Number of unsignalized intersections/mile 14 0.57 15.36 7.06 4.04 Accdens Number of driveways plus unsignalized intersections/mile 14 20.68 87.55 51.81 19.76 Sigdens Number of signalized intersections/mile 14 2.58 8.84 5.11 1.87 Medopdens Number of median openings/mile 10 0.00 5.01 1.82 1.92 Nodrwys Number of driveways 14 16.00 684.00 181.57 220.54 Nocomfulldrwy Number of commercial full movement driveways 14 0.00 448.00 78.07 119.43 Noresfulldrwy Number of residential full movement driveways 14 0.00 128.00 20.71 36.96 Nocomlimdrwy Number of commercial limited movement driveways 14 0.00 614.00 76.21 161.99 Noreslimdrwy Number of residential limited movement driveways 14 0.00 32.00 6.57 10.50 Nounsig Number of unsignalized intersections 14 1.00 141.00 33.36 43.28 No3legunsig Number of 3-legged unsignalized intersections 14 0.00 102.00 22.50 30.35 No4legunsig Number of 4-legged unsignalized intersections 14 0.00 39.00 10.86 13.84 No5legunsig Number of 5-legged unsignalized intersections 14 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 14 0.00 56.00 13.86 16.59 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 14 0.00 86.00 8.64 22.84 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 14 0.00 82.00 8.29 21.82 No3leglfmounsig Number of 3-legged left from major only unsignalized intersections 14 0.00 4.00 0.36 1.08 No4legfullunsig Number of 4-legged full movement unsignalized intersections 14 0.00 38.00 10.71 13.60

Summary Statistics by Land Use and Region 145   Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. No4leglimunsig Number of 4-legged limited movement unsignalized intersections 14 0.00 1.00 0.14 0.36 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 14 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 14 0.00 1.00 0.14 0.36 Nortlunsig Number of unsignalized intersections with a right-turn lane 14 0.00 0.00 0.00 0.00 Noltlunsig Number of unsignalized intersections with a left-turn lane 14 0.00 84.00 19.21 25.32 Nosig Number of signalized intersections 14 3.00 66.00 18.79 21.24 Minspcsig Minimum spacing of signalized intersections (ft) 14 139 1,461 495 388 Maxspcsig Maximum spacing of signalized intersections (ft) 14 846 4,130 1,992 1,023 No3legsig Number of 3-legged signalized intersections 14 0.00 11.00 2.57 2.98 No4legsig Number of 4-legged signalized intersections 14 2.00 57.00 16.07 18.52 No5legsig Number of 5-legged signalized intersections 14 0.00 1.00 0.07 0.27 Nortlsig Number of signalized intersections with a right-turn lane on mainline 14 0.00 25.00 4.29 6.57 Noltlsig Number of signalized intersections with a left-turn lane on mainline 14 0.00 63.00 17.79 20.48 Nomedop Number of median openings 10 0.00 40.00 8.70 14.45 Nomedoplt Number of median openings with a left-turn lane 10 0.00 40.00 8.30 14.63 Nomedopnolt Number of median openings without a left-turn lane 10 0.00 2.00 0.40 0.84 Speed_limit Posted speed limit (mi/h) 14 25 45 38 4.70 avgAADT Average AADT 14 17,723 67,080 45,707 15,177 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 3 275 360 325 44 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 3 275 360 325 44 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 2 235 255 245 14 Table D-4. (Continued). Commercial Table D-5. Summary statistics for North Carolina commercial land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 24 0.84 195.31 39.21 38.46 Injury Injury crashes/mile-year 24 0.00 40.74 8.92 8.03 Turning Turning crashes/mile-year 24 0.00 24.44 6.27 5.86 Rear-end Rear-end crashes/mile-year 24 0.00 69.63 17.18 16.46 Right-angle Right-angle crashes/mile-year 24 0.00 52.10 6.73 10.30 Proplane1 Proportion of total length with 2 lanes 24 0.00 1.00 0.21 0.39 Proplane2 Proportion of total length with 3 or 4 lanes 24 0.00 1.00 0.63 0.42 Proplane3 Proportion of total length with 5 or more lanes 24 0.00 1.00 0.18 0.32 Propdiv Proportion of total length with curb or raised concrete median 24 0.00 1.00 0.51 0.46 Proptwltl Proportion of total length with a TWLTL 24 0.00 1.00 0.29 0.37 Propundiv Proportion of total length with an undivided median 24 0.00 1.00 0.21 0.35 Propnodev Proportion of total length with no adjacent development 24 0.00 1.00 0.15 0.32 Proppartdev Proportion of total length with partial adjacent development 24 0.00 1.00 0.74 0.38 Propfulldev Proportion of total length with full adjacent development 24 0.00 1.00 0.11 0.28 Proplight Proportion of total length with illumination present 24 0.00 1.00 0.66 0.45 Proppoorpvmnt Proportion of total length with a poor pavement condition 23 0.00 0.71 0.05 0.15 Propvc Proportion of total length with visual clutter 24 0.00 1.00 0.16 0.34 Proplimconn Proportion of total length with limited connectivity on adjacent developments 24 0.00 1.00 0.22 0.38 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 24 0.00 0.74 0.12 0.21 Propsigconn Proportion of total length with significant connectivity on adjacent developments 24 0.00 1.00 0.62 0.41 Propfrontrd Proportion of total length with a frontage road 24 0.00 0.42 0.03 0.10 Drwydens Number of driveways/mile 24 0.00 50.00 10.79 11.90 (continued on next page)

146 Application of Crash Modification Factors for Access Management Table D-5. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Medopdens Number of median openings/mile 18 0.00 5.62 0.96 1.45 Nodrwys Number of driveways 24 0.00 103.00 20.96 25.33 Nocomfulldrwy Number of commercial full movement driveways 24 0.00 78.00 9.88 17.85 Noresfulldrwy Number of residential full movement driveways 24 0.00 22.00 2.63 6.41 Nocomlimdrwy Number of commercial limited movement driveways 24 0.00 39.00 8.00 10.17 Noreslimdrwy Number of residential limited movement driveways 24 0.00 5.00 0.46 1.32 Nounsig Number of unsignalized intersections 24 0.00 34.00 7.54 7.40 No3legunsig Number of 3-legged unsignalized intersections 24 0.00 19.00 5.63 5.19 No4legunsig Number of 4-legged unsignalized intersections 24 0.00 15.00 1.92 3.09 No5legunsig Number of 5-legged unsignalized intersections 24 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 24 0.00 18.00 3.21 3.92 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 24 0.00 13.00 2.42 3.09 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 24 0.00 10.00 2.04 2.56 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 24 0.00 3.00 0.38 0.77 No4legfullunsig Number of 4-legged full movement unsignalized intersections 24 0.00 15.00 1.71 3.09 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 24 0.00 2.00 0.21 0.51 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 24 0.00 1.00 0.08 0.28 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 24 0.00 2.00 0.13 0.45 Nortlunsig Number of unsignalized intersections with a right-turn lane 24 0.00 14.00 2.08 3.23 Noltlunsig Number of unsignalized intersections with a left-turn lane 24 0.00 31.00 4.79 6.59 Nosig Number of signalized intersections 24 0.00 15.00 4.88 3.71 Minspcsig Minimum spacing of signalized intersections (ft) 21 201 12,228 1,691 2,551 Maxspcsig Maximum spacing of signalized intersections (ft) 21 977 12,228 3,934 2,936 No3legsig Number of 3-legged signalized intersections 24 0.00 4.00 0.96 1.16 No4legsig Number of 4-legged signalized intersections 24 0.00 11.00 3.88 2.86 No5legsig Number of 5-legged signalized intersections 24 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right turn lane on mainline 24 0.00 9.00 3.42 2.32 Noltlsig Number of signalized intersections with a left-turn lane on mainline 24 0.00 15.00 4.75 3.65 Nomedop Number of median openings 18 0.00 10.00 2.22 3.34 Medoplt Number of median openings with a left-turn lane 18 0.00 10.00 1.89 3.12 Medopnolt Number of median openings without a left-turn lane 18 0.00 6.00 0.33 1.41 Speed_limit Posted speed limit (mi/h) 24 35 55 45 4.29 avgAADT Average AADT 24 50 46,087 22,085 13,311 Spcofflt Minimum spacing from off-ramp to available left-turn onto mainline from same side of road (ft) 12 376 1,991 856 458 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 12 331 1,991 808 490 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 12 189 2,446 1,063 700 Unsigdens Number of unsignalized intersections/mile 24 0.00 8.00 4.05 2.19 Accdens Number of driveways plus unsignalized intersections/mile 24 0.92 57.78 14.85 12.63 Sigdens Number of signalized intersections/mile 24 0.00 9.04 2.96 2.00 Table D-6. Summary statistics for Minnesota commercial land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 20 12.62 140.26 38.85 30.27 Injury Injury crashes/mile-year 20 12.62 140.26 38.85 30.27 Turning Turning crashes/mile-year 20 0.22 23.93 3.12 5.12 Rear-end Rear-end crashes/mile-year 20 5.56 65.28 20.01 15.85 Right-angle Right-angle crashes/mile-year 20 1.35 27.64 6.29 7.10 Proplane1 Proportion of total length with 2 lanes 20 0.00 1.00 0.12 0.32 Proplane2 Proportion of total length with 3 or 4 lanes 20 0.00 1.00 0.83 0.32 Proplane3 Proportion of total length with 5 or more lanes 20 0.00 0.37 0.04 0.11 Propdiv Proportion of total length with curb or raised concrete median 20 0.00 1.00 0.73 0.41

Summary Statistics by Land Use and Region 147   Table D-6. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Propnodev Proportion of total length with no adjacent development 20 0.00 0.14 0.01 0.03 Proppartdev Proportion of total length with partial adjacent development 20 0.50 1.00 0.92 0.16 Propfulldev Proportion of total length with full adjacent development 20 0.00 0.50 0.07 0.16 Proplight Proportion of total length with illumination present 20 0.00 1.00 0.51 0.47 Proppoorpvmnt Proportion of total length with a poor pavement condition 20 0.00 1.00 0.10 0.27 Propvc Proportion of total length with visual clutter 20 0.00 1.00 0.37 0.41 Proplimconn Proportion of total length with limited connectivity on adjacent developments 20 0.00 1.00 0.44 0.39 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 20 0.00 1.00 0.50 0.39 Propsigconn Proportion of total length with significant connectivity on adjacent developments 20 0.00 1.00 0.07 0.23 Propfrontrd Proportion of total length with a frontage road 20 0.00 1.00 0.67 0.40 Drwydens Number of driveways/mile 20 0.00 39.56 10.96 13.27 Unsigdens Number of unsignalized intersections/mile 20 0.00 7.46 2.61 2.22 Accdens Number of driveways plus unsignalized intersections/mile 20 0.00 46.44 13.57 15.23 Sigdens Number of signalized intersections/mile 20 0.57 7.21 3.11 1.88 Medopdens Number of median openings/mile 17 0.00 6.31 0.99 1.52 Nodrwys Number of driveways 20 0.00 91.00 25.15 30.36 Nocomfulldrwy Number of commercial full movement driveways 20 0.00 89.00 9.85 20.73 Noresfulldrwy Number of residential full movement driveways 20 0.00 6.00 1.00 1.97 Nocomlimdrwy Number of commercial limited movement driveways 20 0.00 62.00 12.55 20.92 Noreslimdrwy Number of residential limited movement driveways 20 0.00 15.00 1.75 4.14 Nounsig Number of unsignalized intersections 20 0.00 24.00 7.05 6.59 No3legunsig Number of 3-legged unsignalized intersections 20 0.00 21.00 4.65 5.15 No4legunsig Number of 4-legged unsignalized intersections 20 0.00 12.00 2.35 3.31 No5legunsig Number of 5-legged unsignalized intersections 20 0.00 1.00 0.05 0.22 No3legfullunsig Number of 3-legged full movement unsignalized intersections 20 0.00 14.00 2.25 3.18 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 20 0.00 11.00 2.45 3.43 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 20 0.00 11.00 2.40 3.45 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 20 0.00 1.00 0.05 0.22 No4legfullunsig Number of 4-legged full movement unsignalized intersections 20 0.00 13.00 2.35 3.39 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 20 0.00 1.00 0.05 0.22 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 20 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 20 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 20 0.00 13.00 3.00 3.67 Noltlunsig Number of unsignalized intersections with a left-turn lane 20 0.00 14.00 3.70 4.78 Nosig Number of signalized intersections 20 2.00 16.00 7.10 3.70 Minspcsig Minimum spacing of signalized intersections (ft) 20 141 3,612 1,275 1,030 Maxspcsig Maximum spacing of signalized intersections (ft) 20 143 27,595 4,535 5,702 No3legsig Number of 3-legged signalized intersections 20 0.00 3.00 0.65 0.93 No4legsig Number of 4-legged signalized intersections 20 2.00 13.00 6.45 3.28 No5legsig Number of 5-legged signalized intersections 20 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right-turn lane on mainline 20 1.00 11.00 4.75 2.65 Noltlsig Number of signalized intersections with a left-turn lane on mainline 20 2.00 11.00 6.25 2.77 Nomedop Number of median openings 17 0.00 22.00 3.29 5.62 Nomedoplt Number of median openings with a left-turn lane 17 0.00 17.00 3.06 5.10 Nomedopnolt Number of median openings without a left-turn lane 17 0.00 5.00 0.65 1.50 Speed_limit Posted speed limit (mi/h) 20 30 60 45 10.94 avgAADT Average AADT 20 14,295 52,858 30,402 12,016 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 9 142 1,554 808 499 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 9 142 1,554 749 454 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 9 93 3,500 1,053 1,011 Proptwltl Proportion of total length with a TWLTL 20 0.00 1.00 0.10 0.29 Propundiv Proportion of total length with an undivided median 20 0.00 1.00 0.17 0.33

148 Application of Crash Modification Factors for Access Management Table D-7. Summary statistics for Northern California commercial land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 22 0.54 43.84 21.17 14.41 Injury Injury crashes/mile-year 22 0.32 17.81 7.90 5.30 Turning Turning crashes/mile-year 22 0.00 12.72 5.34 3.77 Rear-end Rear-end crashes/mile-year 22 0.00 25.57 9.95 7.92 Right-angle Right-angle crashes/mile-year 22 0.00 7.02 2.01 1.70 Proplane1 Proportion of total length with 2 lanes 22 0.00 1.00 0.16 0.35 Proplane2 Proportion of total length with 3 or 4 lanes 22 0.00 1.00 0.49 0.44 Proplane3 Proportion of total length with 5 or more lanes 22 0.00 1.00 0.35 0.43 Propdiv Proportion of total length with curb or raised concrete median 22 0.00 1.00 0.64 0.45 Proptwltl Proportion of total length with a TWLTL 22 0.00 1.00 0.23 0.35 Propundiv Proportion of total length with an undivided median 22 0.00 1.00 0.14 0.28 Propnodev Proportion of total length with no adjacent development 22 0.00 1.00 0.06 0.23 Proppartdev Proportion of total length with partial adjacent development 22 0.00 1.00 0.43 0.45 Propfulldev Proportion of total length with full adjacent development 22 0.00 1.00 0.51 0.47 Proplight Proportion of total length with illumination present 22 0.00 1.00 0.90 0.24 Proppoorpvmnt Proportion of total length with a poor pavement condition 22 0.00 0.10 0.00 0.02 Propvc Proportion of total length with visual clutter 22 0.00 1.00 0.29 0.41 Proplimconn Proportion of total length with limited connectivity on adjacent developments 22 0.00 1.00 0.29 0.37 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 22 0.00 1.00 0.40 0.38 Propsigconn Proportion of total length with significant connectivity on adjacent developments 22 0.00 1.00 0.31 0.41 Propfrontrd Proportion of total length with a frontage road 22 0.00 1.00 0.18 0.30 Drwydens Number of driveways/mile 22 2.00 67.88 38.82 18.61 Unsigdens Number of unsignalized intersections/mile 22 1.50 13.09 6.41 3.88 Accdens Number of driveways plus unsignalized intersections/mile 22 3.50 72.97 45.23 20.22 Sigdens Number of signalized intersections/mile 22 0.00 8.06 4.17 1.96 Medopdens Number of median openings/mile 21 0.00 6.08 1.88 1.85 Nodrwys Number of driveways 22 4.00 627.00 137.14 177.62 Nocomfulldrwy Number of commercial full movement driveways 22 0.00 415.00 43.05 89.66 Noresfulldrwy Number of residential full movement driveways 22 0.00 49.00 2.68 10.40 Nocomlimdrwy Number of commercial limited movement driveways 22 0.00 477.00 87.73 125.51 Noreslimdrwy Number of residential limited movement driveways 22 0.00 22.00 3.68 6.31 Nounsig Number of unsignalized intersections 22 2.00 137.00 22.45 33.50 No3legunsig Number of 3-legged unsignalized intersections 22 2.00 92.00 18.36 25.27 No4legunsig Number of 4-legged unsignalized intersections 22 0.00 45.00 4.09 9.70 No5legunsig Number of 5-legged unsignalized intersections 22 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 22 0.00 68.00 9.68 15.93 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 22 0.00 36.00 9.14 12.38 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 22 0.00 36.00 8.68 11.75 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 22 0.00 3.00 0.45 0.91 No4legfullunsig Number of 4-legged full movement unsignalized intersections 22 0.00 45.00 4.00 9.72 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 22 0.00 2.00 0.09 0.43 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 22 0.00 1.00 0.05 0.21 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 22 0.00 1.00 0.05 0.21 Nortlunsig Number of unsignalized intersections with a right-turn lane 22 0.00 5.00 0.50 1.34 Noltlunsig Number of unsignalized intersections with a left-turn lane 22 0.00 89.00 11.59 19.92 Nosig Number of signalized intersections 22 0.00 54.00 12.95 14.86 Minspcsig Minimum spacing of signalized intersections (ft) 19 114 3,408 650 721 Maxspcsig Maximum spacing of signalized intersections (ft) 19 735 5,745 2,133 1,199 No3legsig Number of 3-legged signalized intersections 22 0.00 14.00 3.27 3.95 No4legsig Number of 4-legged signalized intersections 22 0.00 41.00 9.50 11.45 No5legsig Number of 5-legged signalized intersections 22 0.00 5.00 0.36 1.14 Nortlsig Number of signalized intersections with a right-turn lane on mainline 22 0.00 9.00 2.91 2.51 Noltlsig Number of signalized intersections with a left-turn lane on mainline 22 0.00 42.00 12.09 13.31 Nomedop Number of median openings 21 0.00 42.00 7.29 11.38

Summary Statistics by Land Use and Region 149   Table D-7. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Nomedoplt Number of median openings with a left-turn lane 21 0.00 34.00 6.24 9.88 Nomedopnolt Number of median openings without a left-turn lane 21 0.00 8.00 1.10 2.47 Speed_limit Posted speed limit (mi/h) 22 30 50 38 5.29 avgAADT Average AADT 22 6,233 46,014 27,364 10,725 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 4 200 1,483 783 590 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 4 21 1,048 311 494 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 4 32 215 101 79 Table D-8. Summary statistics for Southern California commercial land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 22 1.64 108.99 26.65 22.41 Injury Injury crashes/mile-year 22 0.33 35.88 8.26 7.65 Turning Turning crashes/mile-year 22 0.33 35.88 8.26 7.65 Rear-end Rear-end crashes/mile-year 22 0.33 43.60 11.13 9.80 Right-angle Right-angle crashes/mile-year 22 0.00 14.99 2.72 3.08 Proplane1 Proportion of total length with 2 lanes 22 0.00 0.47 0.02 0.10 Proplane2 Proportion of total length with 3 or 4 lanes 22 0.00 1.00 0.56 0.45 Proplane3 Proportion of total length with 5 or more lanes 22 0.00 1.00 0.42 0.46 Propdiv Proportion of total length with curb or raised concrete median 22 0.00 1.00 0.44 0.44 Proptwltl Proportion of total length with a TWLTL 22 0.00 1.00 0.41 0.42 Propundiv Proportion of total length with an undivided median 22 0.00 1.00 0.15 0.30 Propnodev Proportion of total length with no adjacent development 22 0.00 1.00 0.13 0.30 Proppartdev Proportion of total length with partial adjacent development 22 0.00 1.00 0.55 0.44 Propfulldev Proportion of total length with full adjacent development 22 0.00 1.00 0.33 0.41 Proplight Proportion of total length with illumination present 22 0.00 1.00 0.78 0.39 Proppoorpvmnt Proportion of total length with a poor pavement condition 22 0.00 0.00 0.00 0.00 Propvc Proportion of total length with visual clutter 22 0.00 1.00 0.30 0.39 Proplimconn Proportion of total length with limited connectivity on adjacent developments 22 0.00 1.00 0.41 0.37 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 22 0.00 1.00 0.50 0.36 Propsigconn Proportion of total length with significant connectivity on adjacent developments 22 0.00 1.00 0.09 0.23 Propfrontrd Proportion of total length with a frontage road 22 0.00 1.00 0.36 0.41 Drwydens Number of driveways/mile 22 0.00 63.69 26.81 19.51 Unsigdens Number of unsignalized intersections/mile 22 0.00 16.07 5.69 3.70 Accdens Number of driveways plus unsignalized intersections/mile 22 1.97 79.76 32.50 22.07 Sigdens Number of signalized intersections/mile 22 0.00 5.45 3.31 1.30 Medopdens Number of median openings/mile 15 0.00 12.01 2.06 3.10 Nodrwys Number of driveways 22 0.00 279.00 73.50 79.34 Nocomfulldrwy Number of commercial full movement driveways 22 0.00 216.00 38.23 60.13 Noresfulldrwy Number of residential full movement driveways 22 0.00 58.00 5.73 15.04 Nocomlimdrwy Number of commercial limited movement driveways 22 0.00 152.00 29.45 46.53 Noreslimdrwy Number of residential limited movement driveways 22 0.00 2.00 0.09 0.43 Nounsig Number of unsignalized intersections 22 0.00 58.00 15.55 17.68 No3legunsig Number of 3-legged unsignalized intersections 22 0.00 53.00 12.00 14.82 No4legunsig Number of 4-legged unsignalized intersections 22 0.00 21.00 3.55 5.23 No5legunsig Number of 5-legged unsignalized intersections 22 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 22 0.00 35.00 6.14 9.75 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 22 0.00 37.00 5.41 9.96 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 22 0.00 29.00 4.73 8.40 No3leglfmounsig Number of 3-legged left from major only unsignalized intersections 22 0.00 6.00 0.59 1.50 No4legfullunsig Number of 4-legged full movement unsignalized intersections 22 0.00 21.00 3.55 5.23 (continued on next page)

150 Application of Crash Modification Factors for Access Management Table D-8. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. No4leglimunsig Number of 4-legged limited movement unsignalized intersections 22 0.00 0.00 0.00 0.00 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 22 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 22 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 22 0.00 8.00 0.73 2.07 Noltlunsig Number of unsignalized intersections with a left-turn lane 22 0.00 40.00 8.64 11.20 Nosig Number of signalized intersections 22 0.00 38.00 8.95 9.72 Minspcsig Minimum spacing of signalized intersections (ft) 21 344 2,882 1,175 833 Maxspcsig Maximum spacing of signalized intersections (ft) 21 583 7,520 2,806 1,554 No3legsig Number of 3-legged signalized intersections 22 0.00 6.00 0.91 1.44 No4legsig Number of 4-legged signalized intersections 22 0.00 35.00 8.05 9.13 No5legsig Number of 5-legged signalized intersections 22 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right-turn lane on mainline 22 0.00 16.00 2.73 4.24 Noltlsig Number of signalized intersections with a left-turn lane on mainline 22 0.00 37.00 8.68 9.57 Nomedop Number of median openings 15 0.00 31.00 6.20 8.68 Nomedoplt Number of median openings with a left-turn lane 15 0.00 25.00 5.13 7.44 Nomedopnolt Number of median openings without a left-turn lane 15 0.00 6.00 1.07 1.94 Speed_limit Posted speed limit (mi/h) 22 35 50 42 4.51 avgAADT Average AADT 22 11,538 66,002 34,380 14,088 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 3 129 550 348 211 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 3 20 134 83 58 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 2 33 109 71 54 Residential Table D-9. Summary statistics for North Carolina residential land use. Sigdens Number of signalized intersections/mile 24 0.51 3.75 1.67 Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 24 5.22 39.65 18.04 10.01 Injury Injury crashes/mile-year 24 1.12 11.58 4.91 2.51 Turning Turning crashes/mile-year 24 0.00 18.27 3.31 3.57 Rear-end Rear-end crashes/mile-year 24 0.97 18.97 8.21 5.63 Right-angle Right-angle crashes/mile-year 24 0.00 7.30 2.75 2.05 Proplane1 Proportion of total length with 2 lanes 24 0.00 1.00 0.11 0.30 Proplane2 Proportion of total length with 3 or 4 lanes 24 0.00 1.00 0.89 0.30 Proplane3 Proportion of total length with 5 or more lanes 24 0.00 0.00 0.00 0.00 Propdiv Proportion of total length with curb or raised concrete median 24 0.00 1.00 0.32 0.43 Proptwltl Proportion of total length with a TWLTL 24 0.00 1.00 0.36 0.42 Propundiv Proportion of total length with an undivided median 24 0.00 1.00 0.30 0.43 Propnodev Proportion of total length with no adjacent development 24 0.00 1.00 0.09 0.28 Proppartdev Proportion of total length with partial adjacent development 24 0.00 1.00 0.91 0.28 Propfulldev Proportion of total length with full adjacent development 24 0.00 0.00 0.00 0.00 Proplight Proportion of total length with illumination present 24 0.00 1.00 0.79 0.41 Proppoorpvmnt Proportion of total length with a poor pavement condition 24 0.00 1.00 0.08 0.24 Propvc Proportion of total length with visual clutter 24 0.00 0.00 0.00 0.00 Proplimconn Proportion of total length with limited connectivity on adjacent developments 24 0.00 1.00 0.36 0.40 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 24 0.00 1.00 0.19 0.31 Propsigconn Proportion of total length with significant connectivity on adjacent developments 24 0.00 1.00 0.46 0.45 Propfrontrd Proportion of total length with a frontage road 24 0.00 0.00 0.00 0.00 Drwydens Number of driveways/mile 24 0.00 53.55 17.59 16.82 Unsigdens Number of unsignalized intersections/mile 24 0.73 12.05 6.94 2.42 Accdens Number of driveways plus unsignalized intersections/mile 24 1.46 65.60 24.53 18.13 0.83

Summary Statistics by Land Use and Region 151   Table D-9. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Medopdens Number of median openings/mile 15 0.00 5.24 1.02 1.59 Nodrwys Number of driveways 24 0.00 70.00 25.17 21.10 Nocomfulldrwy Number of commercial full movement driveways 24 0.00 20.00 3.38 4.80 Noresfulldrwy Number of residential full movement driveways 24 0.00 60.00 18.25 19.69 Nocomlimdrwy Number of commercial limited movement driveways 24 0.00 18.00 1.88 4.19 Noreslimdrwy Number of residential limited movement driveways 24 0.00 18.00 1.67 3.85 Nounsig Number of unsignalized intersections 24 2.00 30.00 11.79 7.45 No3legunsig Number of 3-legged unsignalized intersections 24 2.00 39.00 10.08 8.48 No4legunsig Number of 4-legged unsignalized intersections 24 0.00 8.00 2.79 2.11 No5legunsig Number of 5-legged unsignalized intersections 24 0.00 0.00 0.00 0.00 No3legfullunsig Number of 3-legged full movement unsignalized intersections 24 1.00 23.00 7.29 5.52 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 24 0.00 11.00 1.71 2.54 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 24 0.00 11.00 1.67 2.57 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 24 0.00 1.00 0.04 0.20 No4legfullunsig Number of 4-legged full movement unsignalized intersections 24 0.00 8.00 2.63 2.10 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 24 0.00 1.00 0.17 0.38 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 24 0.00 1.00 0.17 0.38 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 24 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 24 0.00 7.00 1.42 1.77 Noltlunsig Number of unsignalized intersections with a left-turn lane 24 0.00 30.00 7.67 7.51 Nosig Number of signalized intersections 24 1.00 8.00 2.83 1.99 Minspcsig Minimum spacing of signalized intersections (ft) 18 646 6,506 2,446 1,538 Maxspcsig Maximum spacing of signalized intersections (ft) 18 1,628 11,378 4,462 2,287 No3legsig Number of 3-legged signalized intersections 24 0.00 2.00 0.58 0.72 No4legsig Number of 4-legged signalized intersections 24 0.00 6.00 2.29 1.76 No5legsig Number of 5-legged signalized intersections 24 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right-turn lane on mainline 24 0.00 8.00 1.67 1.71 Noltlsig Number of signalized intersections with a left-turn lane on mainline 24 1.00 8.00 2.71 1.99 Nomedop Number of median openings 15 0.00 7.00 1.40 2.13 Medoplt Number of median openings with a left-turn lane 15 0.00 6.00 1.33 1.95 Medopnolt Number of median openings without a left-turn lane 15 0.00 1.00 0.07 0.26 Speed_limit Posted speed limit (mi/h) 24 35 55 44 5.10 avgAADT Average AADT 24 90 31,353 14,695 7,128 Table D-10. Summary statistics for Minnesota residential land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 21 3.10 79.08 23.35 21.46 Injury Injury crashes/mile-year 21 1.19 26.43 7.72 7.95 Turning Turning crashes/mile-year 21 0.00 5.79 1.52 1.76 Rear-end Rear-end crashes/mile-year 21 0.33 48.49 10.95 13.30 Right-angle Right-angle crashes/mile-year 21 0.36 24.59 4.04 5.44 Proplane1 Proportion of total length with 2 lanes 21 0.00 1.00 0.56 0.50 Proplane2 Proportion of total length with 3 or 4 lanes 21 0.00 1.00 0.39 0.49 Proplane3 Proportion of total length with 5 or more lanes 21 0.00 1.00 0.05 0.22 Propdiv Proportion of total length with curb or raised concrete median 21 0.00 1.00 0.34 0.44 Proptwltl Proportion of total length with a TWLTL 21 0.00 0.29 0.02 0.06 Propundiv Proportion of total length with an undivided median 21 0.00 1.00 0.64 0.43 Propnodev Proportion of total length with no adjacent development 21 0.00 0.40 0.05 0.12 Proppartdev Proportion of total length with partial adjacent development 21 0.00 1.00 0.81 0.34 Propfulldev Proportion of total length with full adjacent development 21 0.00 1.00 0.14 0.34 Proplight Proportion of total length with illumination present 21 0.00 1.00 0.37 0.44 Proppoorpvmnt Proportion of total length with a poor pavement condition 21 0.00 0.00 0.00 0.00 Propvc Proportion of total length with visual clutter 21 0.00 0.34 0.02 0.07 (continued on next page)

152 Application of Crash Modification Factors for Access Management Table D-10. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Proplimconn Proportion of total length with limited connectivity on adjacent developments 21 0.00 1.00 0.93 0.23 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 21 0.00 0.33 0.03 0.08 Propsigconn Proportion of total length with significant connectivity on adjacent developments 21 0.00 1.00 0.05 0.22 Propfrontrd Proportion of total length with a frontage road 21 0.00 1.00 0.44 0.46 Drwydens Number of driveways/mile 21 0.00 73.86 20.93 20.91 Unsigdens Number of unsignalized intersections/mile 21 0.00 15.24 5.90 3.83 Accdens Number of driveways plus unsignalized intersections/mile 21 0.00 79.72 26.82 23.26 Sigdens Number of signalized intersections/mile 21 0.21 5.49 1.93 1.32 Medopdens Number of median openings/mile 16 0.00 3.25 0.52 0.98 Nodrwys Number of driveways 21 0.00 221.00 51.52 59.93 Nocomfulldrwy Number of commercial full movement driveways 21 0.00 54.00 10.19 13.74 Noresfulldrwy Number of residential full movement driveways 21 0.00 160.00 39.86 46.37 Nocomlimdrwy Number of commercial limited movement driveways 21 0.00 8.00 1.00 2.30 Noreslimdrwy Number of residential limited movement driveways 21 0.00 5.00 0.48 1.29 Nounsig Number of unsignalized intersections 21 0.00 51.00 15.43 15.95 No3legunsig Number of 3-legged unsignalized intersections 21 0.00 38.00 9.33 11.94 No4legunsig Number of 4-legged unsignalized intersections 21 0.00 19.00 6.05 6.25 No5legunsig Number of 5-legged unsignalized intersections 21 0.00 1.00 0.05 0.22 No3legfullunsig Number of 3-legged full movement unsignalized intersections 21 0.00 38.00 8.57 11.82 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 21 0.00 5.00 0.76 1.41 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 21 0.00 5.00 0.71 1.42 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 21 0.00 1.00 0.05 0.22 No4legfullunsig Number of 4-legged full movement unsignalized intersections 21 0.00 19.00 6.05 6.25 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 21 0.00 0.00 0.00 0.00 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 21 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 21 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 21 0.00 19.00 3.57 5.46 Noltlunsig Number of unsignalized intersections with a left-turn lane 21 0.00 18.00 2.43 4.07 Nosig Number of signalized intersections 21 1.00 19.00 3.86 4.07 Minspcsig Minimum spacing of signalized intersections (ft) 16 301 6,538 1,896 1,606 Maxspcsig Maximum spacing of signalized intersections (ft) 16 504 13,545 3,767 3,142 No3legsig Number of 3-legged signalized intersections 21 0.00 4.00 0.43 0.98 No4legsig Number of 4-legged signalized intersections 21 1.00 15.00 3.43 3.41 No5legsig Number of 5-legged signalized intersections 21 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right-turn lane on mainline 21 0.00 11.00 2.29 2.41 Noltlsig Number of signalized intersections with a left-turn lane on mainline 21 1.00 17.00 2.95 3.57 Nomedop Number of median openings 16 0.00 3.00 0.75 1.13 Nomedoplt Number of median openings with a left-turn lane 16 0.00 3.00 0.69 1.01 Nomedopnolt Number of median openings without a left-turn lane 16 0.00 1.00 0.06 0.25 Speed_limit Posted speed limit (mi/h) 21 30 55 41 8.54 avgAADT Average AADT 21 5,423 70,333 18,397 16,092 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 7 321 762 487 170 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 7 321 762 460 179 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 8 94 762 367 205

Summary Statistics by Land Use and Region 153   Table D-11. Summary statistics for Northern California residential land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 17 0.19 36.77 15.75 10.49 Injury Injury crashes/mile-year 17 0.00 20.83 6.75 5.91 Turning Turning crashes/mile-year 17 0.00 17.18 4.81 4.10 Rear-end Rear-end crashes/mile-year 17 0.00 15.69 6.56 4.92 Right-angle Right-angle crashes/mile-year 17 0.00 6.67 1.79 1.97 Proplane1 Proportion of total length with 2 lanes 17 0.00 1.00 0.35 0.43 Proplane2 Proportion of total length with 3 or 4 lanes 17 0.00 1.00 0.46 0.45 Proplane3 Proportion of total length with 5 or more lanes 17 0.00 1.00 0.18 0.39 Propdiv Proportion of total length with curb or raised concrete median 17 0.00 1.00 0.49 0.47 Proptwltl Proportion of total length with a TWLTL 17 0.00 0.97 0.11 0.26 Propundiv Proportion of total length with an undivided median 17 0.00 1.00 0.40 0.43 Propnodev Proportion of total length with no adjacent development 17 0.00 0.33 0.06 0.13 Proppartdev Proportion of total length with partial adjacent development 17 0.00 1.00 0.75 0.37 Propfulldev Proportion of total length with full adjacent development 17 0.00 1.00 0.19 0.36 Proplight Proportion of total length with illumination present 17 0.00 1.00 0.46 0.47 Proppoorpvmnt Proportion of total length with a poor pavement condition 17 0.00 0.00 0.00 0.00 Propvc Proportion of total length with visual clutter 17 0.00 1.00 0.09 0.26 Proplimconn Proportion of total length with limited connectivity on adjacent developments 17 0.00 1.00 0.54 0.47 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 17 0.00 1.00 0.25 0.43 Propsigconn Proportion of total length with significant connectivity on adjacent developments 17 0.00 1.00 0.21 0.39 Propfrontrd Proportion of total length with a frontage road 17 0.00 1.00 0.51 0.46 Drwydens Number of driveways/mile 17 0.00 135.52 25.45 35.88 Unsigdens Number of unsignalized intersections/mile 17 0.00 18.71 5.79 4.76 Accdens Number of driveways plus unsignalized intersections/mile 17 0.00 144.14 31.24 38.57 Sigdens Number of signalized intersections/mile 17 0.00 9.09 2.46 2.20 Medopdens Number of median openings/mile 16 0.00 12.30 1.65 3.13 Nodrwys Number of driveways 17 0.00 393.00 65.00 98.03 Nocomfulldrwy Number of commercial full movement driveways 17 0.00 35.00 5.35 9.10 Noresfulldrwy Number of residential full movement driveways 17 0.00 358.00 40.12 90.09 Nocomlimdrwy Number of commercial limited movement driveways 17 0.00 59.00 8.88 15.71 Noreslimdrwy Number of residential limited movement driveways 17 0.00 83.00 10.65 22.23 Nounsig Number of unsignalized intersections 17 0.00 42.00 14.24 12.64 No3legunsig Number of 3-legged unsignalized intersections 17 0.00 36.00 11.29 10.68 No4legunsig Number of 4-legged unsignalized intersections 17 0.00 14.00 2.88 3.77 No5legunsig Number of 5-legged unsignalized intersections 17 0.00 1.00 0.06 0.24 No3legfullunsig Number of 3-legged full movement unsignalized intersections 17 0.00 27.00 8.24 8.04 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 17 0.00 27.00 3.06 6.67 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 17 0.00 25.00 2.82 6.25 No3leglfmounsig Number of 3-legged unsignalized intersections with no left-turn movement from crossroad 17 0.00 2.00 0.18 0.53 No4legfullunsig Number of 4-legged full movement unsignalized intersections 17 0.00 14.00 2.88 3.77 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 17 0.00 0.00 0.00 0.00 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 17 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged unsignalized intersections with no left-turn movement from crossroad 17 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 17 0.00 4.00 0.94 1.09 Noltlunsig Number of unsignalized intersections with a left-turn lane 17 0.00 25.00 7.65 7.42 Nosig Number of signalized intersections 17 0.00 24.00 5.88 5.86 Minspcsig Minimum spacing of signalized intersections (ft) 14 109 4,471 1,677 1,658 Maxspcsig Maximum spacing of signalized intersections (ft) 14 702 7,265 3,960 1,829 No3legsig Number of 3-legged signalized intersections 17 0.00 6.00 1.35 2.03 No4legsig Number of 4-legged signalized intersections 17 0.00 20.00 4.47 4.81 No5legsig Number of 5-legged signalized intersections 17 0.00 1.00 0.06 0.24 Nortlsig Number of signalized intersections with a right-turn lane on mainline 17 0.00 8.00 2.53 2.55 Noltlsig Number of signalized intersections with a left-turn lane on mainline 17 0.00 23.00 4.06 5.61 (continued on next page)

154 Application of Crash Modification Factors for Access Management Table D-11. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Nomedop Number of median openings 16 0.00 19.00 3.31 5.20 Nomedoplt Number of median openings with a left-turn lane 16 0.00 19.00 2.94 4.89 Nomedopnolt Number of median openings without a left-turn lane 16 0.00 4.00 0.38 1.02 Speed_limit Posted speed limit (mi/h) 17 25 55 42 9.34 avgAADT Average AADT 17 10,300 69,847 26,490 13,972 Spcofflt Minimum spacing from off-ramp to available left turn onto mainline from same side of road (ft) 3 183 662 364 260 Spcoffrt Minimum spacing from off-ramp to available right turn onto mainline from same side of road (ft) 3 49 662 319 313 Spcon Minimum spacing from on-ramp to available right turn onto mainline from same side of road (ft) 1 383 383 383 -- Table D-12. Summary statistics for Southern California residential land use. Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. Total Total crashes/mile-year 13 4.15 51.13 19.39 14.47 Injury Injury crashes/mile-year 13 1.57 21.51 8.05 5.64 Turning Turning crashes/mile-year 13 1.04 10.77 5.30 3.13 Rear-end Rear-end crashes/mile-year 13 2.07 35.50 9.34 9.55 Right-angle Right-angle crashes/mile-year 13 0.00 4.04 1.51 1.21 Proplane1 Proportion of total length with 2 lanes 13 0.00 1.00 0.18 0.37 Proplane2 Proportion of total length with 3 or 4 lanes 13 0.00 1.00 0.66 0.47 Proplane3 Proportion of total length with 5 or more lanes 13 0.00 1.00 0.16 0.37 Propdiv Proportion of total length with curb or raised concrete median 13 0.00 1.00 0.31 0.44 Proptwltl Proportion of total length with a TWLTL 13 0.00 1.00 0.42 0.43 Propundiv Proportion of total length with an undivided median 13 0.00 1.00 0.27 0.36 Propnodev Proportion of total length with no adjacent development 13 0.00 0.58 0.05 0.16 Proppartdev Proportion of total length with partial adjacent development 13 0.00 1.00 0.69 0.41 Propfulldev Proportion of total length with full adjacent development 13 0.00 1.00 0.25 0.40 Proplight Proportion of total length with illumination present 13 0.00 1.00 0.62 0.45 Proppoorpvmnt Proportion of total length with a poor pavement condition 13 0.00 0.00 0.00 0.00 Propvc Proportion of total length with visual clutter 13 0.00 1.00 0.21 0.38 Proplimconn Proportion of total length with limited connectivity on adjacent developments 13 0.00 1.00 0.81 0.31 Propmodconn Proportion of total length with moderate connectivity on adjacent developments 13 0.00 1.00 0.19 0.31 Propsigconn Proportion of total length with significant connectivity on adjacent developments 13 0.00 0.00 0.00 0.00 Propfrontrd Proportion of total length with a frontage road 13 0.00 1.00 0.55 0.46 Drwydens Number of driveways/mile 13 0.00 85.71 19.62 21.98 Unsigdens Number of unsignalized intersections/mile 13 0.61 14.29 6.76 4.42 Accdens Number of driveways plus unsignalized intersections/mile 13 0.61 100.00 26.38 25.42 Sigdens Number of signalized intersections/mile 13 0.00 2.56 1.86 0.80 Medopdens Number of median openings/mile 5 0.00 3.17 1.44 1.24 Nodrwys Number of driveways 13 0.00 123.00 31.46 33.76 Nocomfulldrwy Number of commercial full movement driveways 13 0.00 88.00 15.54 25.51 Noresfulldrwy Number of residential full movement driveways 13 0.00 32.00 10.77 12.09 Nocomlimdrwy Number of commercial limited movement driveways 13 0.00 12.00 3.00 4.40 Noreslimdrwy Number of residential limited movement driveways 13 0.00 26.00 2.15 7.17 Nounsig Number of unsignalized intersections 13 1.00 34.00 11.92 10.05 No3legunsig Number of 3-legged unsignalized intersections 13 1.00 33.00 9.54 8.94 No4legunsig Number of 4-legged unsignalized intersections 13 0.00 9.00 2.31 2.53 No5legunsig Number of 5-legged unsignalized intersections 13 0.00 1.00 0.08 0.28 No3legfullunsig Number of 3-legged full movement unsignalized intersections 13 0.00 27.00 8.23 8.08 No3leglimunsig Number of 3-legged limited movement unsignalized intersections 13 0.00 6.00 1.31 2.29 No3legrirounsig Number of 3-legged right-in-right-out unsignalized intersections 13 0.00 6.00 1.31 2.29 No3leglfmounsig Number of 3-legged left from major only unsignalized intersections 13 0.00 0.00 0.00 0.00

Summary Statistics by Land Use and Region 155   Table D-12. (Continued). Variable Name Variable Description Corridors Minimum Maximum Mean St. Dev. No4legfullunsig Number of 4-legged full movement unsignalized intersections 13 0.00 9.00 2.31 2.53 No4leglimunsig Number of 4-legged limited movement unsignalized intersections 13 0.00 0.00 0.00 0.00 No4legrirounsig Number of 4-legged right-in-right-out unsignalized intersections 13 0.00 0.00 0.00 0.00 No4leglfmounsig Number of 4-legged left from major only unsignalized intersections 13 0.00 0.00 0.00 0.00 Nortlunsig Number of unsignalized intersections with a right-turn lane 13 0.00 3.00 0.31 0.85 Noltlunsig Number of unsignalized intersections with a left-turn lane 13 1.00 25.00 8.62 8.04 Nosig Number of signalized intersections 13 0.00 7.00 3.31 1.93 Minspcsig Minimum spacing of signalized intersections (ft) 11 258 5,541 1,839 1,500 Maxspcsig Maximum spacing of signalized intersections (ft) 11 817 17,546 4,241 4,580 No3legsig Number of 3-legged signalized intersections 13 0.00 2.00 0.85 0.90 No4legsig Number of 4-legged signalized intersections 13 0.00 5.00 2.46 1.71 No5legsig Number of 5-legged signalized intersections 13 0.00 0.00 0.00 0.00 Nortlsig Number of signalized intersections with a right-turn lane on mainline 13 0.00 5.00 1.62 1.56 Noltlsig Number of signalized intersections with a left-turn lane on mainline 13 0.00 7.00 3.08 1.98 Nomedop Number of median openings 5 0.00 3.00 1.60 1.14 Nomedoplt Number of median openings with a left-turn lane 5 0.00 2.00 1.40 0.89 Nomedopnolt Number of median openings without a left-turn lane 5 0.00 1.00 0.20 0.45 Speed_limit Posted speed limit (mi/h) 13 40 55 47 5.55 avgAADT Average AADT 13 15,358 76,837 32,706 18,835