Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
13: Hwy. 2 & West Access 2/14/2011
Movement EBL EBT WBT WBR SBL SBR
Lane Configurations
Volume (veh/h) 0 2118 1513 194 0 194
Sign Control Free Free Stop
Grade 0% 0% 0%
Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92
Hourly flow rate (vph) 0 2302 1645 211 0 211
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type None TWLTL
Median storage veh) 2
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 1855 2796 822
vC1, stage 1 conf vol 1645
vC2, stage 2 conf vol 1151
vCu, unblocked vol 1855 2796 822
tC, single (s) 4.1 6.8 6.9
tC, 2 stage (s) 5.8
tF (s) 2.2 3.5 3.3
p0 queue free % 100 100 33
cM capacity (veh/h) 322 121 317
Direction, Lane # EB 1 EB 2 WB 1 WB 2 WB 3 SB 1
Volume Total 1151 1151 822 822 211 211
Volume Left 0 0 0 0 0 0
Volume Right 0 0 0 0 211 211
cSH 1700 1700 1700 1700 1700 317
Volume to Capacity 0.68 0.68 0.48 0.48 0.12 0.67
Queue Length 95th (ft) 0 0 0 0 0 112
Control Delay (s) 0.0 0.0 0.0 0.0 0.0 36.3
Lane LOS
E
Approach Delay (s) 0.0 0.0 36.3
Approach LOS
E
Intersection Summary
Average Delay 1.8
Intersection Capacity Utilization 61.9% ICU Level of Service B
Analysis Period (min) 15
West Plains Development Traffic Impact Analysis 5:00 pm 2/8/2011 2032 Alternative 3 Buildout
Synchro 7 - Report
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