SwashWare
HCM-CALC

Project Properties

Analyst Roadway Name Analysis Period PM Peak
Analysis Date 8/22/2017 7:29:12 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 OffRamp2-Example2.xfr

Input Values and Intermediate Calculation Results

Mainline Data
# Lanes Demand (veh/h) Peak Hour Factor Driver Population Factor
3 4200 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)
500 5.00 0.00 0.930 25
Lanes Decel Lane Length, 1 (ft) Decel Lane Length, 2 (ft) Effective Decel Lane Length (ft)
1 300 N/A 300

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)
4753 566 4187 0.615 3141

Adjacent Ramp Data

Performance Measures and LOS

v/c ratio Avg. Speed, Ramp Influence Area (mi/h) Density, Ramp Influence Area (pc/mi/ln)
0.69 49.0 28.6
Avg. Speed, Overall (mi/h) Density, Overall (pc/mi/ln) LOS
53.1 29.8 D

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 2090 3770 5390 ** 6100
4 3010 5060 6690 ** 8130
5 3010 5810 8090 ** 10160
Lanes Hourly Volume In Both Directions [D = 0.5]
2 870 1410 2040 2670 3140
4 3040 5090 6740 ** 8140
6 4190 7550 10780 ** 12200
8 6030 10120 13380 ** 16270
10 6030 11630 16190 ** 20330
Lanes Annual Average Daily Traffic [K = 0.1]
2 8700 14100 20400 26700 31400
4 30400 50900 67400 ** 81400
6 41900 75500 107800 ** 122000
8 60300 101200 133800 ** 162700
10 60300 116300 161900 ** 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.