Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 9, Problem 10P
To determine
The situations which require adjustments from the base conditions for multilane highway capacity analysis.
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An existing rural freeway in rolling terrain is to be analyzed to determine LOS using the following information:
Number of lanes in each direction: 2
Peak hour volume: 2640 veh/h
18% trucks
2% recreational vehicles
PHF _ 0.91
Lane width: 12 ft
Lateral clearance: 10 ft
Average interchange spacing: 3 mi
A particular roadway segment has a 6000-ft section of 3% upgrade, followed by a 5000-ft section of 5% upgrade. The traffic on the road includes 8% trucks and 4% recreational vehicles. Determine the PCEs.
An existing urban freeway in rolling terrain is to be analyzed to determine LOS using the following information:
Number of lanes in each direction: 3
Peak hour volume: 3300 veh/h (in the peak direction, mainly commuter traffic)
8% trucks
2% recreational vehicles
PHF=0.95
Lane width: 11 ft
Lateral clearance: 4 ft
Average interchange spacing: 1.0 mile
Base FFS: 70 mph
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Traffic and Highway Engineering
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