Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
9: Thorpe & Craig 2/10/2011
Movement EBT EBR WBL WBT NBL NBR
Lane Configurations
Volume (veh/h) 2 4 453 4 4 380
Sign Control Free Free Stop
Grade 0% 0% 0%
Peak Hour Factor 0.83 0.83 0.83 0.83 0.83 0.83
Hourly flow rate (vph) 2 5 546 5 5 458
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None None
Median storage veh)
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 7 1101 5
vC1, stage 1 conf vol
vC2, stage 2 conf vol
vCu, unblocked vol 7 1101 5
tC, single (s) 4.1 6.4 6.2
tC, 2 stage (s)
tF (s) 2.2 3.5 3.3
p0 queue free % 66 97 57
cM capacity (veh/h) 1627 155 1075
Direction, Lane # EB 1 WB 1 NB 1
Volume Total 7 551 463
Volume Left 0 546 5
Volume Right 5 0 458
cSH 1700 1627 1013
Volume to Capacity 0.00 0.34 0.46
Queue Length 95th (ft) 0 37 61
Control Delay (s) 0.0 8.3 11.5
Lane LOS A B
Approach Delay (s) 0.0 8.3 11.5
Approach LOS
B
Intersection Summary
Average Delay 9.7
Intersection Capacity Utilization 62.4% ICU Level of Service B
Analysis Period (min) 15
West Plains Development Traffic Impact Analysis
Synchro 7 - Report
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