SwashWare
HCM-CALC

Project Properties

Analyst Roadway Name Analysis Period PM Peak
Analysis Date 8/22/2017 7:29:11 PM From Analysis Module Off-Ramp Segment
Agency To Module Version Date 4/2/2017
Location Analysis Direction HCM Edition HCM2010
User Notes
File Name OffRamp1-Example2.xfr

Input Values and Intermediate Calculation Results

Mainline Data
# Lanes Demand (veh/h) Peak Hour Factor Driver Population Factor
3 4500 0.950 1.000

Heavy Vehicle Factor Values
Terrain % Grade Length (mi) % Trucks % RVs Truck PCE RV PCE Heavy Vehicle Factor
Rolling N/A N/A 5.0 0.0 2.50 2.00 0.930

Free Flow Speed Values
FFS Method Measured
FFS (mi/h) 60.0

Off-Ramp Data

Demand (veh/h) % Trucks % RVs Heavy Vehicle Factor FFS (mi/h)
300 5.00 0.00 0.930 40
Lanes Decel Lane Length, 1 (ft) Decel Lane Length, 2 (ft) Effective Decel Lane Length (ft)
1 500 N/A 500

Analysis Flow Rates
Analysis Flow Rate, Mainline Entrance (pc/h/ln) Analysis Flow Rate, Off-Ramp (pc/h) Analysis Flow Rate, Mainline Exit (pc/h) Prop. Vehicles in Lanes 1 and 2 Flow Rate in Lanes 1 and 2 (pc/h)
5092 339 4753 0.617 3272

Adjacent Ramp Data

Performance Measures and LOS

v/c ratio Avg. Speed, Ramp Influence Area (mi/h) Density, Ramp Influence Area (pc/mi/ln)
0.74 52.9 27.9
Avg. Speed, Overall (mi/h) Density, Overall (pc/mi/ln) LOS
56.0 30.3 C

Service Volumes

A B C D E
Lanes Hourly Volume In Peak Direction
1 430 700 1020 1330 1570
2 1520 2540 3370 ** 4070
3 2130 3840 5490 ** 6100
4 3200 5370 7110 ** 8130
5 3200 6580 8710 ** 10160
Lanes Hourly Volume In Both Directions [D = 0.5]
2 870 1410 2040 2670 3140
4 3040 5090 6740 ** 8140
6 4260 7690 10980 ** 12200
8 6410 10750 14220 ** 16270
10 6410 13170 17430 ** 20330
Lanes Annual Average Daily Traffic [K = 0.1]
2 8700 14100 20400 26700 31400
4 30400 50900 67400 ** 81400
6 42600 76900 109800 ** 122000
8 64100 107500 142200 ** 162700
10 64100 131700 174300 ** 203300
Notes
-- Not applicable for this facility type.
* Cannot be achieved based on input data provided.
** No defined LOS threshold for this LOS level.
*** Service volume the same as for previous LOS level.