Agenda - 02-22-1999 - 1a - Laserfiche WebLink

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rA 0 Kimley -Horn and Associates, Inc. LAWRENCE ROAD SUBDIVISION ADDITIONAL INFORMATION April 1, 1998 Vehicle Classification Vehicle classification counts were performed during the afternoon peak period from 4:00 PM to 6:00 PM for the intersections analyzed. The results for the two -hour period are summarized below. SU stands for single unit trucks (not including pickup trucks, while TTST stands for tractor trailer /semi - trailer vehicle. Lawrence Road at US 70 Business Northbound: 12% SU, 3 % TTST Southbound: 14% SU, 2% TTST Eastbound: 6% SU, 0 % TTST Westbound: 80/o SU, 0% TTST Total intersection: 10% SU. I% TTST Lawrence Road at Old NC 10 Southbound: 12% SU, 1% TTST Eastbound: 10% SU, 0% TTST Westbound: 9% SU, 0 %a. TTST Total intersection:. 10% SU, 0% TTST Old NC 10 at NC 86 Northbound: 4% SU, 0% TTST Southbound: 4% SU, I %TTST Westbound: 6% SU, O %TTST Total intersection: 4% SU, 0% TTST US 70 Business at US 70 Northbound: 2% SU, 0% TTST Southbound: 3% SU, 0% TTST Eastbound: 4% SU, '0% TTST Westbound: 3 % SU, 0% TTST Total intersection: 3% SU, 0 %TTST' Capacity analyses were reviewed to include the specific vehicle classifications counts. The original data reflected the following default assumptions: 85% auto, 10% SU and 5% TTST. The only intersection where conditions change as a result of the revised analyses is the intersection of NC 86 and Old NC 10 - during the A' vl peak hour under existing conditions. The westbound approach delay is reduced from 21.6 seconds per vehicle to 19.7 seconds per vehicle, thereby improving the LOS from D to C. The approach delay is marginally reduced at several other intersections: however, the reduction is insufficient to alter the LOS rating_, of these inter: ections.