Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
2: Hwy. 2 & Lundstrom St. 1/18/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (veh/h) 19 1123 30 19 883 29 15 3 21 11 4 11
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) 20 1158 31 20 910 30 15 3 22 11 4 11
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 940 1189 1720 2192 594 1606 2192 470
vC1, stage 1 conf vol 1212 1212 964 964
vC2, stage 2 conf vol 508 979 641 1228
vCu, unblocked vol 940 1189 1720 2192 594 1606 2192 470
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 % 97 97 91 98 95 95 98 98
cM capacity (veh/h) 725 589 176 191 453 221 184 545
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1
Volume Total 20 772 417 20 607 333 40 27
Volume Left 20 0 0 20 0 0 15 11
Volume Right 0 0 31 0 0 30 22 11
cSH 725 1700 1700 589 1700 1700 265 284
Volume to Capacity 0.03 0.45 0.25 0.03 0.36 0.20 0.15 0.09
Queue Length 95th (ft) 2 0 0 3 0 0 13 8
Control Delay (s) 10.1 0.0 0.0 11.3 0.0 0.0 21.0 19.0
Lane LOS B B C C
Approach Delay (s) 0.2 0.2 21.0 19.0
Approach LOS C C
Intersection Summary
Average Delay 0.8
Intersection Capacity Utilization 42.0% ICU Level of Service A
Analysis Period (min) 15
Existing PM Peak Hour Conditions
Synchro 7 - Report
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