Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
2: Hwy. 2 & Lundstrom St. 2/8/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (veh/h) 27 1937 30 19 1727 31 15 3 21 12 4 17
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) 28 1997 31 20 1780 32 15 3 22 12 4 18
Pedestrians
Lane Width (ft)
Walking Speed (ft/s)
Percent Blockage
Right turn flare (veh) 2
Median type TWLTL None
Median storage veh) 2
Upstream signal (ft)
pX, platoon unblocked
vC, conflicting volume 1812 2028 3017 3920 1014 2891 3919 906
vC1, stage 1 conf vol 2068 2068 1836 1836
vC2, stage 2 conf vol 949 1852 1056 2084
vCu, unblocked vol 1812 2028 3017 3920 1014 2891 3919 906
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 % 92 93 69 95 91 81 93 94
cM capacity (veh/h) 335 280 49 59 240 66 56 283
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1
Volume Total 28 1331 697 20 1187 625 40 34
Volume Left 28 0 0 20 0 0 15 12
Volume Right 0 0 31 0 0 32 22 18
cSH 335 1700 1700 280 1700 1700 110 105
Volume to Capacity 0.08 0.78 0.41 0.07 0.70 0.37 0.37 0.32
Queue Length 95th (ft) 7 0 0 6 0 0 37 31
Control Delay (s) 16.7 0.0 0.0 18.8 0.0 0.0 63.3 54.8
Lane LOS C C F F
Approach Delay (s) 0.2 0.2 63.3 54.8
Approach LOS F F
Intersection Summary
Average Delay 1.3
Intersection Capacity Utilization 71.2% ICU Level of Service C
Analysis Period (min) 15
2015 plus Project, Alt. 1, PH2-Mitigation Synchro 7 - Report
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