Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
14: Hwy. 2 & Middle Access 2/8/2011
Movement EBL EBT WBT WBR SBL SBR
Lane Configurations
Volume (veh/h) 318 1103 982 436 674 144
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) 346 1199 1067 474 733 157
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 1541 2358 534
vC1, stage 1 conf vol 1067
vC2, stage 2 conf vol 1291
vCu, unblocked vol 1541 2358 534
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 % 19 0 68
cM capacity (veh/h) 427 41 491
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 SB 1 SB 2
Volume Total 346 599 599 534 534 474 733 157
Volume Left 346 0 0 0 0 0 733 0
Volume Right 0 0 0 0 0 474 0 157
cSH 427 1700 1700 1700 1700 1700 41 491
Volume to Capacity 0.81 0.35 0.35 0.31 0.31 0.28 18.00 0.32
Queue Length 95th (ft) 185 0 0 0 0 0 Err 34
Control Delay (s) 40.7 0.0 0.0 0.0 0.0 0.0 Err 15.7
Lane LOS E F C
Approach Delay (s) 9.1 0.0 8241.6
Approach LOS
F
Intersection Summary
Average Delay 1847.0
Intersection Capacity Utilization 92.1% ICU Level of Service F
Analysis Period (min) 15
2012 plus Project, Alt. 2, Buildout Synchro 7 - Report
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