Appendix D Traffic Impact Analysis - westplainseis.com

MOVEMENT SUMMARY
Middle Dwy./Hwy. (YEAR 2015 PM PEAK, ALT.1,PH.2)
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 1211 1.0 0.699 8.2 LOS A 9.1 229.7 0.86 0.90 27.9
6R R 586 1.0 0.365 4.3 NA 9 NA 9 NA 9 NA 9 0.41 31.4
Approach 1797 1.0 0.699 7.0 LOS A 9.1 229.7 0.58 0.74 29.0
North: Middle Dwy.
7L L 874 1.0 0.938 35.3 LOS D 13.0 326.4 0.98 1.44 18.8
4R R 189 1.0 0.118 4.3 NA 9 NA 9 NA 9 NA 9 0.41 31.4
Approach 1063 1.0 0.938 29.8 LOS D 13.0 326.4 0.81 1.25 20.1
West: Hwy. 2
5L L 398 1.0 0.693 16.8 LOS B 5.6 140.9 0.83 1.04 24.8
2T T 1341 1.0 0.987 26.0 LOS C 18.9 475.9 1.00 1.59 20.7
Approach 1739 1.0 0.987 23.9 LOS C 18.9 475.9 0.96 1.46 21.6
All Vehicles 4599 1.0 0.987 18.6 LOS B 18.9 475.9 0.78 1.13 23.3
Level of Service (Aver. Int. Delay): LOS B. Based on average delay for all vehicle movements. LOS Method: Delay (HCM).
Level of Service (Worst Movement): LOS D. 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 2:54:01 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\Alt1-PH2.sip
8000011, DAVID EVANS & ASSOCIATES INC, SINGLE