10. A lane on a freeway displays the following characteristics: (a) average headway between vehicles is 1.9s, and (b) the average spacing between vehicles is 210 feet. What is the rate of flow for the lane? What is the average speed in mi/hr?

10. A lane on a freeway displays the following characteristics: (a) average headway between vehicles is 1.9s, and (b) the average spacing between vehicles is 210 feet. What is the rate of flow for the lane? What is the average speed in mi/hr?

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter5: Highway Safety

Section: Chapter Questions

Problem 10P

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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

10.A lane on a freeway displays the following characteristics: (a) average headway
between vehicles is 1.9s, and (b) the average spacing between vehicles is 210
feet. What is the rate of flow for the lane? What is the average speed in mi/hr?
11. Define 'Crash Modification Factor (CMF)" and describe how one might be used
by a transportation agency

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