6.25 A four-lane freeway (two lanes in each direction) segment consists of passenger cars only, a driving population of regular users, a peak-hour directional distribution of 0.70, a peak-hour factor of 0.80, and a measured free-flow speed of 70 mi/h. Assuming Fig. 6.7 applies, if the AADT is 30,000 veh/day, determine the level of service for the 10th, 50th, and 100th highest annual hourly volumes.

6.25 A four-lane freeway (two lanes in each direction) segment consists of passenger cars only, a driving population of regular users, a peak-hour directional distribution of 0.70, a peak-hour factor of 0.80, and a measured free-flow speed of 70 mi/h. Assuming Fig. 6.7 applies, if the AADT is 30,000 veh/day, determine the level of service for the 10th, 50th, and 100th highest annual hourly volumes.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter9: Capacity And Level Of Service For Highway Segments

Section: Chapter Questions

Problem 21P

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Concept explainers

Capacity and Level of Service at Intersections

The term capacity is associated with transportation engineering. Capacity helps to understand how many pedestrians or vehicles can be handled by a transport facility. Level of service is also a term associated with transportation engineering. The level of service indicates the performance of the transport facility.

Question

If any charts or graphs where used please insert below and explain how it was used

=
6.25 A four-lane freeway (two lanes in each
direction) segment consists of passenger cars only, a
driving population of regular users, a peak-hour
directional distribution of 0.70, a peak-hour factor of
0.80, and a measured free-flow speed of 70 mi/h.
Assuming Fig. 6.7 applies, if the AADT is 30,000
veh/day, determine the level of service for the 10th,
50th, and 100th highest annual hourly volumes.

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Step 1: Given data:

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Step 2: For 10th highest hour volume:

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Step 3: For 50th highest hour volume:

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Step 4: For 100th highest hour volume:

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How do you define D in each part of the solution? Please explain

also how do you find the maximun flow rate in each part of the soliution stated above did you use a chart if so please include

Maximum service flow rate 1444 pc/hr/ln

Maximum service flow rate 1338 pc/hr/ln

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Capacity and level of service at intersections

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