Appendix D Traffic Impact Analysis - westplainseis.com

INTERSECTION SUMMARY
Craig Rd./Dwy. North (YEAR 2032 PM PEAK, Alt 1 Buildout)
West Plains Development
Roundabout
Site: Roundabout
Intersection Performance - Hourly Values
Performance Measure Vehicles Persons
Demand Flows (Total) 2122 veh/h 2546 pers/h
Percent Heavy Vehicles 1.7 %
Degree of Saturation 0.853
Practical Spare Capacity -0.7 %
Effective Intersection Capacity
2480 veh/h
Control Delay (Total) 6.71 veh-h/h 8.06 pers-h/h
Control Delay (Average) 11.4 sec 11.4 sec
Control Delay (Worst Lane)
19.5 sec
Control Delay (Worst Movement) 20.6 sec 20.6 sec
Geometric Delay (Average)
7.2 sec
Stop-Line Delay (Average)
4.2 sec
Level of Service (Aver. Int. Delay)
LOS B
Level of Service (Worst Movement)
LOS C
Level of Service (Worst Lane)
LOS B
95% Back of Queue - Vehicles (Worst Lane) 16.5 veh
95% Back of Queue - Distance (Worst Lane) 419.1 ft
Total Effective Stops 1516 veh/h 1819 pers/h
Effective Stop Rate 0.71 per veh 0.71 per pers
Proportion Queued 0.70 0.70
Performance Index 47.2 47.2
Travel Distance (Total) 811.5 veh-mi/h 973.8 pers-mi/h
Travel Distance (Average) 2019 ft 2019 ft
Travel Time (Total) 27.5 veh-h/h 33.0 pers-h/h
Travel Time (Average) 46.6 sec 46.6 sec
Travel Speed 29.5 mph 29.5 mph
Cost (Total) 493.56 $/h 493.56 $/h
Fuel Consumption (Total)
42.6 gal/h
Carbon Dioxide (Total)
403.2 kg/h
Hydrocarbons (Total)
0.678 kg/h
Carbon Monoxide (Total)
33.89 kg/h
NOx (Total)
1.022 kg/h
LOS (Aver. Int. Delay) for Vehicles is based on average delay for all vehicle movements. LOS Method: Delay (HCM).
LOS Method for individual vehicle movements and lanes: Delay (HCM).
Roundabout LOS Method: Same as Signalised Intersections.
Roundabout Capacity Model: SIDRA Standard.
Intersection Performance - Annual Values
Performance Measure Vehicles Persons
Demand Flows (Total) 1,018,458 veh/y 1,222,150 pers/y
Delay 3,222 veh-h/y 3,867 pers-h/y
Effective Stops 727,750 veh/y 873,300 pers/y
Travel Distance 389,520 veh-mi/y 467,424 pers-mi/y
Travel Time 13,193 veh-h/y 15,832 pers-h/y
Cost 236,911 $/y 236,911 $/y
Fuel Consumption
20,439 gal/y
Carbon Dioxide
193,554 kg/y
Hydrocarbons
326 kg/y
Carbon Monoxide
16,267 kg/y
NOx
490 kg/y
Processed: Thursday, February 10, 2011 5:01:16 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\Craig-6th\2032 Alt3-Buildout-Craig-