Appendix D Traffic Impact Analysis - westplainseis.com

INTERSECTION SUMMARY
Craig Rd./Hwy. (YEAR 2012 PM PEAK, ALT.3,Buildout)
West Plains Development
Roundabout
Site: Roundabout
Intersection Performance - Hourly Values
Performance Measure Vehicles Persons
Demand Flows (Total) 3788 veh/h 4556 pers/h
Percent Heavy Vehicles 1.0 %
Degree of Saturation 0.612
Practical Spare Capacity 38.8 %
Effective Intersection Capacity
6188 veh/h
Control Delay (Total) 6.56 veh-h/h 7.87 pers-h/h
Control Delay (Average) 6.2 sec 6.2 sec
Control Delay (Worst Lane)
18.7 sec
Control Delay (Worst Movement) 18.7 sec 18.7 sec
Geometric Delay (Average)
4.3 sec
Stop-Line Delay (Average)
1.9 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) 6.0 veh
95% Back of Queue - Distance (Worst Lane) 151.2 ft
Total Effective Stops 2024 veh/h 2429 pers/h
Effective Stop Rate 0.53 per veh 0.53 per pers
Proportion Queued 0.55 0.55
Performance Index 65.4 65.4
Travel Distance (Total) 1366.7 veh-mi/h 1640.1 pers-mi/h
Travel Distance (Average) 1905 ft 1901 ft
Travel Time (Total) 46.9 veh-h/h 56.2 pers-h/h
Travel Time (Average) 44.5 sec 44.4 sec
Travel Speed 29.2 mph 29.2 mph
Cost (Total) 758.75 $/h 758.75 $/h
Fuel Consumption (Total)
58.3 gal/h
Carbon Dioxide (Total)
552.0 kg/h
Hydrocarbons (Total)
0.895 kg/h
Carbon Monoxide (Total)
37.89 kg/h
NOx (Total)
1.218 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) 1,818,323 veh/y 2,186,787 pers/y
Delay 3,148 veh-h/y 3,777 pers-h/y
Effective Stops 971,552 veh/y 1,165,862 pers/y
Travel Distance 656,020 veh-mi/y 787,224 pers-mi/y
Travel Time 22,495 veh-h/y 26,994 pers-h/y
Cost 364,201 $/y 364,201 $/y
Fuel Consumption
27,986 gal/y
Carbon Dioxide
264,950 kg/y
Hydrocarbons
430 kg/y
Carbon Monoxide
18,187 kg/y
NOx
584 kg/y
Processed: Wednesday, February 09, 2011 11:19:51 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\Craig-Hwy.2\Alt3-Buildout-Craig.sip