Appendix D Traffic Impact Analysis - westplainseis.com

HCM Unsignalized Intersection Capacity Analysis
2: Hwy. 2 & Lundstrom St. 2/14/2011
Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR
Lane Configurations
Volume (veh/h) 46 2386 36 23 2250 40 18 4 26 16 5 32
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) 47 2460 37 24 2320 41 19 4 27 16 5 33
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 2361 2497 3816 4981 1248 3741 4979 1180
vC1, stage 1 conf vol 2573 2573 2388 2388
vC2, stage 2 conf vol 1243 2408 1354 2592
vCu, unblocked vol 2361 2497 3816 4981 1248 3741 4979 1180
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 % 77 87 3 53 84 38 66 82
cM capacity (veh/h) 204 183 19 9 167 27 15 186
Direction, Lane # EB 1 EB 2 EB 3 WB 1 WB 2 WB 3 NB 1 SB 1
Volume Total 47 1640 857 24 1546 814 49 55
Volume Left 47 0 0 24 0 0 19 16
Volume Right 0 0 37 0 0 41 27 33
cSH 204 1700 1700 183 1700 1700 31 48
Volume to Capacity 0.23 0.96 0.50 0.13 0.91 0.48 1.60 1.14
Queue Length 95th (ft) 22 0 0 11 0 0 140 124
Control Delay (s) 27.9 0.0 0.0 27.6 0.0 0.0 574.9 308.0
Lane LOS D D F F
Approach Delay (s) 0.5 0.3 574.9 308.0
Approach LOS F F
Intersection Summary
Average Delay 9.4
Intersection Capacity Utilization 77.8% ICU Level of Service D
Analysis Period (min) 15
West Plains Development Traffic Impact Analysis
Synchro 7 - Report
2032 Alternative 2 Buildout Page 2