Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
14: Hwy. 2 & Middle Access 2/14/2011
Movement EBL EBT WBT WBR SBL SBR
Lane Configurations
Volume (veh/h) 289 1829 1589 361 607 118
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) 314 1988 1727 392 660 128
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 2120 3349 864
vC1, stage 1 conf vol 1727
vC2, stage 2 conf vol 1622
vCu, unblocked vol 2120 3349 864
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 % 0 0 57
cM capacity (veh/h) 254 0 298
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 SB 1 SB 2
Volume Total 314 994 994 864 864 392 660 128
Volume Left 314 0 0 0 0 0 660 0
Volume Right 0 0 0 0 0 392 0 128
cSH 254 1700 1700 1700 1700 1700 0 298
Volume to Capacity 1.24 0.58 0.58 0.51 0.51 0.23 Err 0.43
Queue Length 95th (ft) 381 0 0 0 0 0 Err 52
Control Delay (s) 176.2 0.0 0.0 0.0 0.0 0.0 Err 25.9
Lane LOS F F D
Approach Delay (s) 24.0 0.0 Err
Approach LOS
F
Intersection Summary
Average Delay
Err
Intersection Capacity Utilization 103.6% ICU Level of Service G
Analysis Period (min) 15
West Plains Development Traffic Impact Analysis 5:00 pm 2/8/2011 2032 Alternative 3 Buildout
Synchro 7 - Report
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