Appendix D Traffic Impact Analysis - westplainseis.com

MOVEMENT SUMMARY
Middle Dwy./Hwy. (YEAR 2032 PM PEAK, Alt 1 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 VehiclesDistance Queued Stop Rate Speed
veh/h % v/c sec veh ft per veh mph
East: Hwy. 2
6T T 2287 1.0 1.062 64.5 LOS E 52.0 1310.2 1.00 1.91 12.0
6R R 398 1.0 0.248 0.0 X X X X 0.33 32.1
Approach 2685 1.0 1.062 54.9 LOS D 52.0 1310.2 0.85 1.68 13.3
North: Middle Dwy.
7L L 407 1.0 0.838 65.5 LOS E 7.1 178.0 0.99 1.24 12.5
4R R 243 1.0 0.152 0.0 X X X X 0.33 32.1
Approach 651 1.0 0.838 41.0 LOS D 7.1 178.0 0.62 0.90 15.9
West: Hwy. 2
5L L 324 1.0 0.462 11.8 LOS B 2.5 63.0 0.62 0.86 23.0
2T T 2087 1.0 0.991 45.4 LOS D 25.8 650.9 1.00 1.43 15.4
Approach 2412 1.0 0.991 40.9 LOS D 25.8 650.9 0.95 1.36 16.2
All Vehicles5747 1.0 1.062 47.5 LOS D 52.0 1310.2 0.87 1.46 14.7
X: Not applicable for Continuous movement.
Level of Service (LOS) Method: Delay (HCM 2000).
Roundabout LOS Method: Same as Signalised Intersections.
Vehicle movement LOS values are based on average delay per movement
Intersection and Approach LOS values are based on average delay for all vehicle movements.
Roundabout Capacity Model: SIDRA Standard.
HCM Delay Model used.
Processed: Wednesday, July 13, 2011 10:41:23 AM Copyright © 2000-2011 Akcelik and Associates Pty Ltd
SIDRA INTERSECTION 5.1.3.1990
www.sidrasolutions.com
Project: P:\S\SPTR00000001\0600INFO\Traffic\April 2011-Final TIA\Sidra\7-12-11\Hwy.2-Middle Dwy\2032 Alt1-
Buildout-Middle.sip
8000011, DAVID EVANS & ASSOCIATES INC, SINGLE