Appendix D Traffic Impact Analysis - westplainseis.com

MOVEMENT SUMMARY
Middle Dwy./Hwy. (YEAR 2012 PM PEAK, ALT.2,Buildout)
West Plains Development
Roundabout
Site: Roundabout
Movement Performance - Vehicles
Mov ID Turn
Demand
Deg. Average Level of 95% Back of Queue Prop. Effective Average
Flow HV Satn Delay Service Vehicles Distance Queued Stop Rate Speed
veh/h % v/c sec veh ft per veh mph
East: Hwy. 2
6T T 1067 1.0 0.579 5.7 LOS A 5.9 149.0 0.73 0.67 28.5
6R R 474 1.0 0.295 4.3 NA 9 NA 9 NA 9 NA 9 0.41 31.4
Approach 1541 1.0 0.579 5.3 LOS A 5.9 149.0 0.50 0.59 29.4
North: Middle Dwy.
7L L 733 1.0 0.665 18.8 LOS B 5.6 141.8 0.86 1.08 24.0
4R R 157 1.0 0.098 4.3 NA 9 NA 9 NA 9 NA 9 0.41 31.4
Approach 889 1.0 0.666 16.2 LOS B 5.6 141.8 0.71 0.96 24.9
West: Hwy. 2
5L L 346 1.0 0.533 14.5 LOS B 3.6 91.6 0.72 0.96 25.8
2T T 1199 1.0 0.778 9.6 LOS A 7.9 199.4 0.86 1.04 27.9
Approach 1545 1.0 0.777 10.7 LOS B 7.9 199.4 0.83 1.02 27.4
All Vehicles 3975 1.0 0.777 9.8 LOS A 7.9 199.4 0.68 0.84 27.4
Level of Service (Aver. Int. Delay): LOS A. Based on average delay for all vehicle movements. LOS Method: Delay (HCM).
Level of Service (Worst Movement): LOS B. LOS Method for individual vehicle movements: Delay (HCM).
Approach LOS values are based on the worst delay for any vehicle movement.
Roundabout LOS Method: Same as Signalised Intersections.
Roundabout Capacity Model: SIDRA Standard.
9 Continuous movement
Processed: Tuesday, February 08, 2011 2:42:42 PM Copyright © 2000-2010 Akcelik & Associates Pty Ltd
SIDRA INTERSECTION 5.0.5.1510
www.sidrasolutions.com
Project: P:\S\SPTR00000001\0600INFO\Traffic\February-2011-TIA\Sidra\Hwy.2-Middle Dwy\Alt2-Buildout.sip
8000011, DAVID EVANS & ASSOCIATES INC, SINGLE