Appendix D Traffic Impact Analysis - westplainseis.com

INTERSECTION SUMMARY
Craig Rd./Hwy. 902 (YEAR 2019 PM PEAK, ALT.1,PH.3)
West Plains Development
Roundabout
Site: Roundabout
Intersection Performance - Hourly Values
Performance Measure Vehicles Persons
Demand Flows (Total) 1650 veh/h 1990 pers/h
Percent Heavy Vehicles 1.1 %
Degree of Saturation 0.749
Practical Spare Capacity 13.4 %
Effective Intersection Capacity
2202 veh/h
Control Delay (Total) 4.76 veh-h/h 5.72 pers-h/h
Control Delay (Average) 10.4 sec 10.3 sec
Control Delay (Worst Lane)
13.9 sec
Control Delay (Worst Movement) 17.9 sec 17.9 sec
Geometric Delay (Average)
5.0 sec
Stop-Line Delay (Average)
5.4 sec
Level of Service (Aver. Int. Delay)
LOS B
Level of Service (Worst Movement)
LOS B
Level of Service (Worst Lane)
LOS B
95% Back of Queue - Vehicles (Worst Lane) 10.5 veh
95% Back of Queue - Distance (Worst Lane) 264.4 ft
Total Effective Stops 1379 veh/h 1654 pers/h
Effective Stop Rate 0.84 per veh 0.83 per pers
Proportion Queued 0.76 0.75
Performance Index 37.0 37.0
Travel Distance (Total) 606.8 veh-mi/h 728.2 pers-mi/h
Travel Distance (Average) 1942 ft 1932 ft
Travel Time (Total) 21.8 veh-h/h 26.2 pers-h/h
Travel Time (Average) 47.6 sec 47.3 sec
Travel Speed 27.8 mph 27.8 mph
Cost (Total) 359.58 $/h 359.58 $/h
Fuel Consumption (Total)
28.2 gal/h
Carbon Dioxide (Total)
266.9 kg/h
Hydrocarbons (Total)
0.442 kg/h
Carbon Monoxide (Total)
19.92 kg/h
NOx (Total)
0.615 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) 792,000 veh/y 955,200 pers/y
Delay 2,286 veh-h/y 2,744 pers-h/y
Effective Stops 661,775 veh/y 794,130 pers/y
Travel Distance 291,267 veh-mi/y 349,521 pers-mi/y
Travel Time 10,467 veh-h/y 12,560 pers-h/y
Cost 172,599 $/y 172,599 $/y
Fuel Consumption
13,534 gal/y
Carbon Dioxide
128,136 kg/y
Hydrocarbons
212 kg/y
Carbon Monoxide
9,564 kg/y
NOx
295 kg/y
Processed: Tuesday, February 08, 2011 2:28:08 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\SR902-Craig Rd\Alt1-PH3-SR902.sip