Appendix D Traffic Impact Analysis - westplainseis.com

INTERSECTION SUMMARY
Craig Rd./Hwy. 902 (YEAR 2032 PM PEAK, Alt 2 Buildout)
West Plains Development
Roundabout
Site: Roundabout
Intersection Performance - Hourly Values
Performance Measure Vehicles Persons
Demand Flows (Total) 1736 veh/h 2093 pers/h
Percent Heavy Vehicles 1.1 %
Degree of Saturation 0.807
Practical Spare Capacity 5.3 %
Effective Intersection Capacity
2151 veh/h
Control Delay (Total) 5.58 veh-h/h 6.70 pers-h/h
Control Delay (Average) 11.6 sec 11.5 sec
Control Delay (Worst Lane)
17.4 sec
Control Delay (Worst Movement) 21.7 sec 21.7 sec
Geometric Delay (Average)
4.8 sec
Stop-Line Delay (Average)
6.8 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) 12.6 veh
95% Back of Queue - Distance (Worst Lane) 317.7 ft
Total Effective Stops 1555 veh/h 1866 pers/h
Effective Stop Rate 0.90 per veh 0.89 per pers
Proportion Queued 0.80 0.80
Performance Index 41.3 41.3
Travel Distance (Total) 634.7 veh-mi/h 761.7 pers-mi/h
Travel Distance (Average) 1931 ft 1922 ft
Travel Time (Total) 23.5 veh-h/h 28.2 pers-h/h
Travel Time (Average) 48.7 sec 48.5 sec
Travel Speed 27.0 mph 27.0 mph
Cost (Total) 384.06 $/h 384.06 $/h
Fuel Consumption (Total)
29.8 gal/h
Carbon Dioxide (Total)
281.8 kg/h
Hydrocarbons (Total)
0.469 kg/h
Carbon Monoxide (Total)
21.01 kg/h
NOx (Total)
0.645 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) 833,067 veh/y 1,004,480 pers/y
Delay 2,679 veh-h/y 3,214 pers-h/y
Effective Stops 746,544 veh/y 895,853 pers/y
Travel Distance 304,675 veh-mi/y 365,610 pers-mi/y
Travel Time 11,273 veh-h/y 13,528 pers-h/y
Cost 184,348 $/y 184,348 $/y
Fuel Consumption
14,287 gal/y
Carbon Dioxide
135,260 kg/y
Hydrocarbons
225 kg/y
Carbon Monoxide
10,087 kg/y
NOx
310 kg/y
Processed: Thursday, February 10, 2011 11:41:36 AM 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\SR902-Craig Rd\2032 Alt2-Buildout-