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From page 387... ... 387 APPENDIX B WORKSHOP SAMPLE PROBLEMS EXERCISE 1: TWO-WAY ARTERIAL SEGMENT Location: Six-lane divided arterial section Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA Basic Roadway Data Number of lanes: 6 Segment length: 0.30 mi Posted speed limit: 45 mph Number of highway-rail grade crossings: 0 Automated speed enforcement: no Cross-Section Data Lane width: 12 ft Outside shoulder width: 4 ft Inside shoulder width: 1 ft Median width: 10 ft Median type: curb Roadside Data Roadside fixed-object offset: 10 ft Roadside fixed-object density: 50/mile Driveway Data Major commercial driveways: 1 Major industrial driveways: 1 Minor driveways: 5 Traffic Data AADT (year 2016) Read the entire page →
From page 388... ... 388 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.764 3.779 6.543 Multiple-vehicle crashes 1.067 1.067 Multiple-vehicle crashes 2.358 3.456 Single-vehicle crashes 1.087 1.087 Single-vehicle crashes 0.259 0.323 Vehicle-pedestrian crashes 0.096 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.051 K A B C 0.036 0.186 0.725 1.818 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 389... ... 389 EXERCISE 1a: TWO-WAY ARTERIAL SEGMENT Location: Six-lane divided arterial section Study year: 2014 Area type: Urban Crash data description: Data for each individual segment Crash data year: 2014 INPUT DATA Traffic Data AADT (year 2014) : 48,000 veh/day Crash Data Crash Type Count Fatal‐and‐injury Property‐damage‐only Multiple‐vehicle 8 14 Single‐vehicle 1 1 OUTPUT SUMMARY What is the total expected number of crashes? Read the entire page →
From page 390... ... 390 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.314 3.237 5.551 Multiple-vehicle crashes 1.067 1.067 Multiple-vehicle crashes 1.948 2.935 Single-vehicle crashes 1.087 1.087 Single-vehicle crashes 0.241 0.303 Vehicle-pedestrian crashes 0.081 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.043 K A B C 0.030 0.156 0.607 1.521 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 391... ... 391 B-391 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 14.928 VP+VB: 0.343 F+I: 5.404 PDO: 9.867 Total: 15.271 Facility Totals Site-specific Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 4.704 9.481 0.357 0.386 5.060 9.867 0.224 0.119 0.000 0.000 0.000 0.000 4.704 9.481 0.357 0.386 5.060 9.867 0.224 0.119 Total Expected Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Street number F+I PDO F+I PDO F+I PDO F+I PDO 1 2016 6D 1.948 2.935 0.241 0.303 8 14 1 1 Vehicle-pedestrian Vehicle-bicycle Predicted crash frequency, crashes / year Site-specific observed crash totals Single-vehicleMultiple-vehicleSingle-vehicleMultiple-vehicle 0.081 Segment Site Information F+I F+I 0.043 Number Year Type Street number 1 2016 6D Segment Site Information F+I PDO F+I PDO F+I PDO F+I PDO 4.704 9.481 0.357 0.386 1.067 1.067 1.087 1.087 Vehicle-bicycle Combined CMF Multiple-vehicle Single-vehicleMultiple-vehicle Single-vehicle Expected crash frequency, crashes / year F+I F+I 0.224 0.119 Vehicle-pedestrian Read the entire page →
From page 392... ... 392 EXERCISE 2: TWO-WAY ARTERIAL SEGMENT Location: Six-lane arterial section with a center two-way left-turn lane (TWLTL) Study year: 2014 Area type: Suburban Crash data description: Data for each individual segment Crash data year: 2014 INPUT DATA Basic Roadway Data Number of lanes: 6 (plus one TWLTL) Read the entire page →
From page 393... ... 393 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.272 3.469 5.741 Multiple-vehicle crashes 1.034 1.246 Multiple-vehicle crashes 1.659 3.012 Single-vehicle crashes 1.279 1.542 Single-vehicle crashes 0.294 0.457 Vehicle-pedestrian crashes 0.184 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.136 K A B C 0.029 0.228 0.726 1.290 Input Data Value Advisory Messages Basic Roadway Data Area type Suburban . Segment type 7T 6 lanes + two-way left-turn lane. Read the entire page →
From page 394... ... 394 B-394 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 7.586 VP+VB: 0.448 F+I: 3.055 PDO: 4.978 Total: 8.034 Facility Totals Site-specific Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 2.296 4.347 0.312 0.631 2.608 4.978 0.258 0.190 0.000 0.000 0.000 0.000 2.296 4.347 0.312 0.631 2.608 4.978 0.258 0.190 Total Expected Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Street number F+I PDO F+I PDO F+I PDO F+I PDO 1 2014 7T 1.659 3.012 0.294 0.457 3 5 1 2 Vehicle-pedestrian Vehicle-bicycle Predicted crash frequency, crashes / year Site-specific observed crash totals Single-vehicleMultiple-vehicleSingle-vehicleMultiple-vehicle 0.184 Segment Site Information F+I F+I 0.136 Number Year Type Street number 1 2014 7T Segment Site Information F+I PDO F+I PDO F+I PDO F+I PDO 2.296 4.347 0.312 0.631 1.034 1.246 1.279 1.542 Vehicle-bicycle Combined CMF Multiple-vehicle Single-vehicleMultiple-vehicle Single-vehicle Expected crash frequency, crashes / year F+I F+I 0.258 0.190 Vehicle-pedestrian Read the entire page →
From page 395... ... 395 EXERCISE 3: TWO-WAY ARTERIAL SEGMENT Location: Conversion of a six-lane divided section into an eight-lane divided section Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA (for six-lane divided section) Use data in Exercise 1 INPUT DATA (for eight-lane divided section) Read the entire page →
From page 396... ... 396 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.764 3.779 6.543 Multiple-vehicle crashes 1.067 1.067 Multiple-vehicle crashes 2.358 3.456 Single-vehicle crashes 1.087 1.087 Single-vehicle crashes 0.259 0.323 Vehicle-pedestrian crashes 0.096 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.051 K A B C 0.036 0.186 0.725 1.818 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 397... ... 397 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.774 4.572 7.346 Multiple-vehicle crashes 0.746 0.746 Multiple-vehicle crashes 1.975 3.499 Single-vehicle crashes 2.493 2.493 Single-vehicle crashes 0.537 1.073 Vehicle-pedestrian crashes 0.163 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.099 K A B C 0.042 0.156 0.661 1.915 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 8D . Read the entire page →
From page 398... ... 398 EXERCISE 4: ONE-WAY ARTERIAL SEGMENT Location: Two-lane one-way arterial section Study year: 2014 Area type: Urban Crash data description: Data for each individual segment Crash data year: 2014 INPUT DATA Basic Roadway Data Number of lanes: 2 Segment length: 0.50 mi Posted speed limit: 30 mph Bike lanes: None Automated speed enforcement: no Parallel parking: on the left side throughout the section Angle parking: on the right side throughout the section Cross-Section Data Lane width: 11 ft Right shoulder width: 0 ft Roadside Data Roadside fixed-object offset: 5 ft Roadside fixed-object density: 16/mile Driveway Data Major commercial driveways: 1 Minor driveways: 10 Traffic Data AADT (year 2014) : 12,000 veh/day Crash Data Crash Type Count Fatal‐and‐injury Property‐damage‐only Multiple‐vehicle 1 2 Single‐vehicle 0 1 OUTPUT SUMMARY What is the total predicted number of crashes? Read the entire page →
From page 399... ... 399 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.987 6.881 9.868 Multiple-vehicle crashes 3.214 3.214 Multiple-vehicle crashes 2.291 6.018 Single-vehicle crashes 3.377 3.377 Single-vehicle crashes 0.427 0.863 Vehicle-pedestrian crashes 0.163 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.106 K A B C 0.036 0.328 1.065 1.558 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 2O . Read the entire page →
From page 400... ... 400 B-400 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 7.039 VP+VB: 0.197 F+I: 2.369 PDO: 4.868 Total: 7.236 Facility Totals Site-specific Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 1.833 3.981 0.339 0.886 2.172 4.868 0.120 0.077 0.000 0.000 0.000 0.000 1.833 3.981 0.339 0.886 2.172 4.868 0.120 0.077 Total Expected Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Street number F+I PDO F+I PDO F+I PDO F+I PDO 1 2014 2O 2.291 6.018 0.427 0.863 1 2 0 1 Vehicle-pedestrian Vehicle-bicycle Predicted crash frequency, crashes / year Site-specific observed crash totals Single-vehicleMultiple-vehicleSingle-vehicleMultiple-vehicle 0.163 Segment Site Information F+I F+I 0.106 Number Year Type Street number 1 2014 2O Segment Site Information F+I PDO F+I PDO F+I PDO F+I PDO 1.833 3.981 0.339 0.886 3.214 3.214 3.377 3.377 Vehicle-bicycle Combined CMF Multiple-vehicle Single-vehicleMultiple-vehicle Single-vehicle Expected crash frequency, crashes / year F+I F+I 0.120 0.077 Vehicle-pedestrian Read the entire page →
From page 401... ... 401 EXERCISE 5: ONE-WAY ARTERIAL SEGMENT Location: Conversion of a two-lane one-way section with parking on both sides into a three-lane one-way section with no parking Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA (for two-lane one-way section) Use data in Exercise 4 Traffic Data AADT (year 2016) Read the entire page →
From page 402... ... 402 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 4.133 9.047 13.180 Multiple-vehicle crashes 3.214 3.214 Multiple-vehicle crashes 3.292 8.071 Single-vehicle crashes 3.377 3.377 Single-vehicle crashes 0.482 0.977 Vehicle-pedestrian crashes 0.218 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.141 K A B C 0.050 0.454 1.473 2.156 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 2O . Read the entire page →
From page 403... ... 403 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 1.441 2.918 4.359 Multiple-vehicle crashes 1.047 1.047 Multiple-vehicle crashes 1.062 2.603 Single-vehicle crashes 1.100 1.100 Single-vehicle crashes 0.232 0.315 Vehicle-pedestrian crashes 0.101 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.046 K A B C 0.012 0.109 0.464 0.856 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 3O . Read the entire page →
From page 404... ... 404 EXERCISE 6: TWO-WAY INTERSECTION (2×2) Location: Three-leg signalized intersection on eight-lane divided arterial Study period: 2015 Area type: Suburban Crash data description: No crash data INPUT DATA Basic Intersection Data Intersection traffic control mode: Signal Lighting: Present Number of Lanes Major Street: 8 lanes Minor Street: 4 lanes Left-Turn Lanes Major Street: One approach (one lane) Read the entire page →
From page 405... ... 405 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 7.093 5.673 12.766 Total-vehicle crashes 1.328 1.328 Total-vehicle crashes 6.482 5.673 Vehicle-pedestrian crashes 6.275 Vehicle-pedestrian crashes 0.259 Vehicle-bicycle crashes 0.352 Severity distribution for F+I crashes K A B C 0.035 0.341 1.845 4.872 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 3SG intersection type Traffic control type . Read the entire page →
From page 406... ... 406 EXERCISE 7: TWO-WAY INTERSECTION (2×2) Location: Four-leg stop-controlled intersection on six-lane divided arterial Study period: 2014 Area type: Suburban Crash data description: Data for each individual intersection Crash data year: 2014 INPUT DATA Basic Intersection Data Intersection traffic control mode: Stop control on minor street Lighting: Present Number of Lanes Major Street: 6 lanes Minor Street: 2 lanes Left-Turn Lanes Major Street: Present (both approaches) Read the entire page →
From page 407... ... 407 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 3.349 3.697 7.046 Total-vehicle crashes 0.913 0.913 Total-vehicle crashes 2.779 3.697 Vehicle-pedestrian crashes 6.275 Vehicle-pedestrian crashes 0.317 Vehicle-bicycle crashes 0.253 Severity distribution for F+I crashes K A B C 0.012 0.265 0.980 2.092 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4ST intersection type Traffic control type . Read the entire page →
From page 408... ... 408 B-408 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 7.667 VP+VB: 0.675 F+I: 3.592 PDO: 4.750 Total: 8.341 Facility Totals Site-specific Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 2.917 4.750 0.376 0.299 0.000 0.000 0.000 0.000 2.917 4.750 0.376 0.299 Total Expected Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Configuration F+I PDO 1 2014 4ST Two-way 3 52.779 F+I F+I 3.697 PDO Vehicle-bicycle Total-vehicle Vehicle-pedestrian Site-specific observed crash totals Total-vehicle Intersection Site Information Predicted crash frequency, crashes / year Vehicle-pedestrian F+I F+I 0.2530.317 Number Year Type Configuration 1 2014 4ST Two-way Intersection Site Information F+I PDO 0.913 0.9130.376 6.275 F+I 4.750 PDO 0.2992.917 F+I Total-vehicle Vehicle-pedestrian Vehicle-bicycle Combined CMF Total-vehicle Vehicle-pedestrian F+I F+I Expected crash frequency, crashes / year Read the entire page →
From page 409... ... 409 EXERCISE 8: ONE-WAY INTERSECTION Location: Conversion of a two-way minor street into one-way at a four-leg intersection on oneway arterial Study period: 2015 Area type: Urban Crash data description: No crash data INPUT DATA Basic Intersection Data Intersection traffic control mode: Signal Lighting: Present Minor Street: Two-way to one-way conversion Number of Lanes Major Street: 4 lanes Minor Street: 2 lanes Left-Turn Lanes Major Street: One approach (one lane) Right-Turn Channelization Major Street: No Minor Street: No Red-light camera: Yes Right-Turn-On-Red Prohibition Number of approaches: 0 Traffic Data Major Street AADT (year 2015) Read the entire page →
From page 410... ... 410 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 1.399 3.574 4.973 Total-vehicle crashes 1.028 1.028 Total-vehicle crashes 0.818 3.574 Vehicle-pedestrian crashes 3.114 Vehicle-pedestrian crashes 0.528 Vehicle-bicycle crashes 0.053 Severity distribution for F+I crashes K A B C 0.003 0.061 0.335 1.000 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4SG intersection type Traffic control type . Read the entire page →
From page 411... ... 411 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 1.307 2.420 3.726 Total-vehicle crashes 1.028 1.028 Total-vehicle crashes 0.740 2.420 Vehicle-pedestrian crashes 3.114 Vehicle-pedestrian crashes 0.528 Vehicle-bicycle crashes 0.038 Severity distribution for F+I crashes K A B C 0.003 0.057 0.312 0.934 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4SG intersection type Traffic control type . Read the entire page →
From page 412... ... 412 EXERCISE 9: TWO-WAY ARTERIAL PROJECT Location: A two-way six-lane divided arterial street project with three homogenous segments, one four-leg signalized intersection, and one three-leg stop-controlled intersection Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA (Segments) Basic Roadway Data Segment 1 Segment 2 Segment 3 Number of lanes 6 6 6 Segment length (mi) Read the entire page →
From page 413... ... 413 Left‐turn operational mode Protected/permitted – Right‐turn‐on‐red prohibition 2 approaches – U‐turn prohibition 2 approaches – Traffic Data Minor‐street AADT (in 2016) 25,000 5,000 Pedestrian Data Level of pedestrian activity High – Number of schools 1 – Number of bus stops 2 – Alcohol sales establishments 1 – Refuge Island On major‐street median (nlanesx = 4) Read the entire page →
From page 414... ... 414 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 7.808 10.437 18.245 Multiple-vehicle crashes 1.091 1.091 Multiple-vehicle crashes 6.767 9.653 Single-vehicle crashes 1.060 1.060 Single-vehicle crashes 0.631 0.784 Vehicle-pedestrian crashes 0.268 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.143 K A B C 0.101 0.526 2.047 5.134 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 415... ... 415 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.969 4.064 7.033 Multiple-vehicle crashes 1.160 1.160 Multiple-vehicle crashes 2.506 3.684 Single-vehicle crashes 1.289 1.289 Single-vehicle crashes 0.304 0.380 Vehicle-pedestrian crashes 0.103 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.055 K A B C 0.038 0.200 0.778 1.952 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 416... ... 416 Safety Prediction Worksheet for Two-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 5.708 7.827 13.535 Multiple-vehicle crashes 1.354 1.354 Multiple-vehicle crashes 4.877 7.169 Single-vehicle crashes 1.338 1.338 Single-vehicle crashes 0.527 0.658 Vehicle-pedestrian crashes 0.198 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.106 K A B C 0.074 0.385 1.496 3.753 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 6D . Read the entire page →
From page 417... ... 417 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 10.831 7.903 18.733 Total-vehicle crashes 1.142 1.142 Total-vehicle crashes 9.001 7.903 Vehicle-pedestrian crashes 6.275 Vehicle-pedestrian crashes 1.508 Vehicle-bicycle crashes 0.321 Severity distribution for F+I crashes K A B C 0.043 0.416 2.410 7.962 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4SG intersection type Traffic control type . Read the entire page →
From page 418... ... 418 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 4.656 2.838 7.494 Total-vehicle crashes 1.000 1.000 Total-vehicle crashes 3.981 2.838 Vehicle-pedestrian crashes 6.275 Vehicle-pedestrian crashes 0.348 Vehicle-bicycle crashes 0.327 Severity distribution for F+I crashes K A B C 0.026 0.574 1.401 2.655 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 3ST intersection type Traffic control type . Read the entire page →
From page 419... ... 419 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 61.663 VP+VB: 3.377 F+I: 31.972 PDO: 33.069 Total: 65.040 Facility Totals None Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 14.150 20.506 1.462 1.823 15.612 22.329 0.569 0.304 12.982 10.740 1.856 0.648 14.150 20.506 1.462 1.823 28.594 33.069 2.425 0.952 Total Predicted Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Street number F+I PDO F+I PDO 1 2016 6D 6.767 9.653 0.631 0.784 2 2016 6D 2.506 3.684 0.304 0.380 3 2016 6D 4.877 7.169 0.527 0.658 Vehicle-pedestrian Vehicle-bicycle Predicted crash frequency, crashes / year Single-vehicleMultiple-vehicle 0.198 0.103 0.268 Segment Site Information F+I F+I 0.106 0.055 0.143 Number Year Type Configuration 1 2016 4SG Two-way 2 2016 3ST Two-way 3.981 9.001 F+I 2.838 7.903 PDO Vehicle-bicycleTotal-vehicle Intersection Site Information Predicted crash frequency, crashes / year Vehicle-pedestrian F+I F+I 0.327 0.321 0.348 1.508 Read the entire page →
From page 420... ... 420 EXERCISE 10: ONE-WAY ARTERIAL PROJECT Location: A one-way three-lane arterial street project with three homogenous segments and two four-leg street intersections Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA (Segments) Basic Roadway Data Segment 1 Segment 2 Segment 3 Number of lanes 3 3 3 Segment length (mi) Read the entire page →
From page 421... ... 421 Traffic Data Minor‐street AADT (in 2016) 12,000 5,000 Pedestrian Data Level of pedestrian activity High Medium‐high Number of schools 1 1 Number of bus stops 2 3 Alcohol sales establishments 0 1 Refuge islands None (nlanesx = 4) Read the entire page →
From page 422... ... 422 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 3.130 5.952 9.082 Multiple-vehicle crashes 3.519 3.519 Multiple-vehicle crashes 2.505 5.517 Single-vehicle crashes 3.134 3.134 Single-vehicle crashes 0.319 0.435 Vehicle-pedestrian crashes 0.211 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.097 K A B C 0.078 0.709 1.244 1.100 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 3O . Read the entire page →
From page 423... ... 423 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 1.544 2.985 4.530 Multiple-vehicle crashes 3.844 3.844 Multiple-vehicle crashes 1.232 2.768 Single-vehicle crashes 3.248 3.248 Single-vehicle crashes 0.159 0.217 Vehicle-pedestrian crashes 0.105 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.048 K A B C 0.035 0.319 0.632 0.559 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 3O . Read the entire page →
From page 424... ... 424 Safety Prediction Worksheet for One-Way Urban and Suburban Arterial Segments General Information Site Information Analyst Street number Agency Street name Date Segment number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 3.883 7.622 11.505 Multiple-vehicle crashes 3.572 3.572 Multiple-vehicle crashes 3.062 7.033 Single-vehicle crashes 3.048 3.048 Single-vehicle crashes 0.432 0.589 Vehicle-pedestrian crashes 0.267 Severity distribution for F+I crashes Vehicle-bicycle crashes 0.122 K A B C 0.040 0.360 1.271 2.212 Input Data Value Advisory Messages Basic Roadway Data Area type Urban . Segment type 3O . Read the entire page →
From page 425... ... 425 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 2.158 4.743 6.901 Total-vehicle crashes 1.300 1.300 Total-vehicle crashes 1.087 4.743 Vehicle-pedestrian crashes 5.603 Vehicle-pedestrian crashes 1.001 Vehicle-bicycle crashes 0.070 Severity distribution for F+I crashes K A B C 0.004 0.080 0.765 1.310 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4SG intersection type Traffic control type . Read the entire page →
From page 426... ... 426 Safety Prediction Worksheet for Urban and Suburban Arterial Intersections General Information Site Information Analyst Major street name Agency Minor street name Date Intersection number Location Analysis year Output Summary Predicted crash frequency, crashes / year Combined CMF F+I PDO Total F+I PDO Total crashes 1.271 2.132 3.403 Total-vehicle crashes 1.223 1.223 Total-vehicle crashes 0.659 2.132 Vehicle-pedestrian crashes 6.275 Vehicle-pedestrian crashes 0.579 Vehicle-bicycle crashes 0.033 Severity distribution for F+I crashes K A B C 0.002 0.046 0.206 1.018 Input Data Value Advisory Messages Intersection Data Area type . Number of legs 4SG intersection type Traffic control type . Read the entire page →
From page 427... ... 427 Crash Totals Tabulation Empirical Bayes adjustment type: MV+SV: 32.888 VP+VB: 2.533 F+I: 11.988 PDO: 23.434 Total: 35.421 Facility Totals None Clear tables Sort rows Calculate Veh-ped Veh-bike F+I PDO F+I PDO F+I PDO F+I F+I 6.799 15.318 0.910 1.241 7.709 16.559 0.582 0.267 1.746 6.875 1.581 0.103 6.799 15.318 0.910 1.241 9.454 23.434 2.163 0.370 Total Predicted Crash Frequency, crashes / year Intersections: Segments: Single-vehicleMultiple-vehicle Total: Site type Total-vehicle Number Year Type Street number F+I PDO F+I PDO 1 2016 3O 2.505 5.517 0.319 0.435 2 2016 3O 1.232 2.768 0.159 0.217 3 2016 3O 3.062 7.033 0.432 0.589 Vehicle-pedestrian Vehicle-bicycle Predicted crash frequency, crashes / year Single-vehicleMultiple-vehicle 0.267 0.105 0.211 Segment Site Information F+I F+I 0.122 0.048 0.097 Number Year Type Configuration 1 2016 4SG One-way 2 2016 4SG One-way 0.659 1.087 F+I 2.132 4.743 PDO Vehicle-bicycleTotal-vehicle Intersection Site Information Predicted crash frequency, crashes / year Vehicle-pedestrian F+I F+I 0.033 0.070 0.579 1.001 Read the entire page →

From page 387...

... 387 APPENDIX B WORKSHOP SAMPLE PROBLEMS EXERCISE 1: TWO-WAY ARTERIAL SEGMENT Location: Six-lane divided arterial section Study year: 2016 Area type: Urban Crash data description: No crash data INPUT DATA Basic Roadway Data Number of lanes: 6 Segment length: 0.30 mi Posted speed limit: 45 mph Number of highway-rail grade crossings: 0 Automated speed enforcement: no Cross-Section Data Lane width: 12 ft Outside shoulder width: 4 ft Inside shoulder width: 1 ft Median width: 10 ft Median type: curb Roadside Data Roadside fixed-object offset: 10 ft Roadside fixed-object density: 50/mile Driveway Data Major commercial driveways: 1 Major industrial driveways: 1 Minor driveways: 5 Traffic Data AADT (year 2016)