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) 38 1571 30 19 1480 33 15 3 21 13 4 26
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) 39 1620 31 20 1526 34 15 3 22 13 4 27
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 1560 1651 2544 3312 825 2493 3311 780
vC1, stage 1 conf vol 1713 1713 1582 1582
vC2, stage 2 conf vol 831 1599 911 1729
vCu, unblocked vol 1560 1651 2544 3312 825 2493 3311 780
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 % 91 95 81 96 93 86 95 92
cM capacity (veh/h) 420 392 79 84 320 96 87 342
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1
Volume Total 39 1080 571 20 1017 543 40 44
Volume Left 39 0 0 20 0 0 15 13
Volume Right 0 0 31 0 0 34 22 27
cSH 420 1700 1700 392 1700 1700 134 167
Volume to Capacity 0.09 0.64 0.34 0.05 0.60 0.32 0.30 0.27
Queue Length 95th (ft) 8 0 0 4 0 0 29 25
Control Delay (s) 14.5 0.0 0.0 14.7 0.0 0.0 42.8 34.2
Lane LOS B B E D
Approach Delay (s) 0.3 0.2 42.8 34.2
Approach LOS E D
Intersection Summary
Average Delay 1.2
Intersection Capacity Utilization 54.4% ICU Level of Service A
Analysis Period (min) 15
2019 PM Peak Hour Background Conditions Synchro 7 - Report
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