Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
2: Hwy. 2 & Lundstrom St. 2/9/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (veh/h) 24 1574 30 19 1295 29 15 3 21 11 4 15
Sign Control Free Free Stop Stop
Grade 0% 0% 0% 0%
Peak Hour Factor 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97 0.97
Hourly flow rate (vph) 25 1623 31 20 1335 30 15 3 22 11 4 15
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh)
Median type TWLTL None
Median storage veh) 2
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 1365 1654 2412 3092 827 2273 3092 682
vC1, stage 1 conf vol 1688 1688 1389 1389
vC2, stage 2 conf vol 724 1404 884 1703
vCu, unblocked vol 1365 1654 2412 3092 827 2273 3092 682
tC, single (s) 4.1 4.1 7.5 6.5 6.9 7.5 6.5 6.9
tC, 2 stage (s) 6.5 5.5 6.5 5.5
tF (s) 2.2 2.2 3.5 4.0 3.3 3.5 4.0 3.3
p0 queue free % 95 95 82 97 93 91 96 96
cM capacity (veh/h) 499 391 88 105 319 122 100 397
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1
Volume Total 25 1082 572 20 890 475 40 31
Volume Left 25 0 0 20 0 0 15 11
Volume Right 0 0 31 0 0 30 22 15
cSH 499 1700 1700 391 1700 1700 148 178
Volume to Capacity 0.05 0.64 0.34 0.05 0.52 0.28 0.27 0.17
Queue Length 95th (ft) 4 0 0 4 0 0 26 15
Control Delay (s) 12.6 0.0 0.0 14.7 0.0 0.0 38.3 29.4
Lane LOS B B E D
Approach Delay (s) 0.2 0.2 38.3 29.4
Approach LOS E D
Intersection Summary
Average Delay 1.0
Intersection Capacity Utilization 54.5% ICU Level of Service A
Analysis Period (min) 15
2012 plus Project, Alt. 3, Buildout Synchro 7 - Report
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