Appendix D Traffic Impact Analysis - westplainseis.com

INTERSECTION SUMMARY
Craig Rd./Hwy. 902 (YEAR 2032 Base PM PEAK)
West Plains Development
Roundabout
Site: Roundabout
Intersection Performance - Hourly Values
Performance Measure Vehicles Persons
Demand Flows (Total) 1387 veh/h 1674 pers/h
Percent Heavy Vehicles 1.1 %
Degree of Saturation 0.556
Practical Spare Capacity 53.0 %
Effective Intersection Capacity
2496 veh/h
Control Delay (Total) 2.73 veh-h/h 3.27 pers-h/h
Control Delay (Average) 7.1 sec 7.0 sec
Control Delay (Worst Lane)
10.8 sec
Control Delay (Worst Movement) 15.7 sec 15.7 sec
Geometric Delay (Average)
4.4 sec
Stop-Line Delay (Average)
2.7 sec
Level of Service (Aver. Int. Delay)
LOS A
Level of Service (Worst Movement)
LOS B
Level of Service (Worst Lane)
LOS B
95% Back of Queue - Vehicles (Worst Lane) 5.2 veh
95% Back of Queue - Distance (Worst Lane) 130.2 ft
Total Effective Stops 851 veh/h 1021 pers/h
Effective Stop Rate 0.61 per veh 0.61 per pers
Proportion Queued 0.56 0.56
Performance Index 25.9 25.9
Travel Distance (Total) 501.9 veh-mi/h 602.3 pers-mi/h
Travel Distance (Average) 1911 ft 1900 ft
Travel Time (Total) 17.2 veh-h/h 20.7 pers-h/h
Travel Time (Average) 44.7 sec 44.4 sec
Travel Speed 29.2 mph 29.2 mph
Cost (Total) 280.22 $/h 280.22 $/h
Fuel Consumption (Total)
21.7 gal/h
Carbon Dioxide (Total)
205.0 kg/h
Hydrocarbons (Total)
0.332 kg/h
Carbon Monoxide (Total)
14.22 kg/h
NOx (Total)
0.456 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) 665,600 veh/y 803,520 pers/y
Delay 1,309 veh-h/y 1,571 pers-h/y
Effective Stops 408,505 veh/y 490,205 pers/y
Travel Distance 240,933 veh-mi/y 289,119 pers-mi/y
Travel Time 8,265 veh-h/y 9,918 pers-h/y
Cost 134,506 $/y 134,506 $/y
Fuel Consumption
10,395 gal/y
Carbon Dioxide
98,419 kg/y
Hydrocarbons
159 kg/y
Carbon Monoxide
6,827 kg/y
NOx
219 kg/y
Processed: Thursday, February 10, 2011 11:28:24 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 Base-SR902.sip