The National Academies Press

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Pages 94-110

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From page 94... ... NCHRP OVERV The proje to input b data colle 17-59 APP IEW OF M ct team use oth office a ction metho ENDIX A ETHODOL d the data co nd field data dology for Fi – DATA CO OGY llection for into the da elements in gure A-1. D A-1 LLECTIO m shown in tabase. Read the entire page →
From page 95... ... NCHRP OFFICE All crash in the off and Geog notewort Site Loca To link th defined i each site Figure A Function County/r team buil of the ma private ro type "rur "urban lo 17-59 COLLECT data elemen ice. Three m raphic Infor hy data colle tion Data e team-com n terms of H . Read the entire page →
From page 96... ... NCHRP Access D Access d within 0. data colle F Intersect The proje discovere chosen o selection horizonta photos co Figure A intersecti ft.) Read the entire page →
From page 97... ... NCHRP Figure A measure used the intersecti degrees, angle. 17-59 Figure -5 provides intersection ruler tool to on skew ang the differenc A-4. Read the entire page →
From page 98... ... NCHRP Fi FIELD M Horizont The proje level rath determin informati presence the follow 1. Read the entire page →
From page 99... ... NCHRP 17-59 A-6 Traffic Volume Collection The methodology for collecting and extrapolating the traffic volume varied across the three states. North Carolina The major roads for NC sites included in the study are all state-maintained roads. Read the entire page →
From page 100... ... NCHRP 17-59 A-7 the OH DOT. Similar to the North Carolina data, non-state maintained AADT data was converted to the appropriate year using annual growth factors provided by the OH DOT. Read the entire page →
From page 101... ... NCHRP 17-59 A-8 Dh = the applicable day-of-week factor for factor group h (if needed) Read the entire page →
From page 102... ... NCHRP 17-59 A-9 Table A-1. ATR Factor Groups. Read the entire page →
From page 103... ... NCHRP 17-59 A-10 Raleigh, which was 909 vehicles per day (vpd) and was collected on Wednesday, June 2, 2010. Read the entire page →
From page 104... ... NCHRP 17-59 A-11 Scenario 2: Site with 2-hr peak period counts for the minor road collected by the project team and 24-hr counts for the major road from local agencies. Site Description The major road is Millbrook Road, which is located in an urban area of Raleigh, NC. Read the entire page →
From page 105... ... NCHRP 17-59 A-12 Table A-4. Hourly Expansion Factors on Millbrook Road. Read the entire page →
From page 106... ... NCHRP 17-59 A-13 Step 2: Repeat steps 1-3 from scenario 1 to calculate AADT. Group 1 is selected as the factor group since the route is located in an urban area, where the land use is characterized as residential. Read the entire page →
From page 107... ... NCHRP 17-59 A-14 Table A-6. Station A9501 Hourly Expansion Factors. Read the entire page →
From page 108... ... NCHRP 17-59 A-15 Step 2: Repeat steps 1-3 from scenario 1 to calculate AADT. Group 1 is selected as the factor group since the route is located in a rural area. Read the entire page →
From page 109... ... NCHRP 17-59 A-16 Table A-7. 72-hr Traffic Counts on Hillside Street. Read the entire page →
From page 110... ... NCHRP 17-59 A-17 Table A-8. Seasonal Factor by Day of Week by Month (Group 6) Read the entire page →

From page 94...

... NCHRP OVERV The proje to input b data colle 17-59 APP IEW OF M ct team use oth office a ction metho ENDIX A ETHODOL d the data co nd field data dology for Fi – DATA CO OGY llection for into the da elements in gure A-1. D A-1 LLECTIO m shown in tabase.