Traffic And Highway Engineering
Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
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Chapter 5, Problem 9P
To determine

The total crash rate and the fatal crash rate for both locations

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Studies were conducted at two sits on rural roads with similar characteristics. The first site was 7.5 miles in length with an Annual Average Daily Traffic (AADT) of 7,400. Over the year-long study period, 42 crashes occurred on this portion of roadway, 5 of them resulting in fatalities. The second site was a 14-mile section with an AADT of 4,700. There were 67 crashes in this section with 5 fatalities. Determine the appropriate crash rates for both locations, and discuss the implications.
Determine the predicted average crash frequency, in crashes (per year), on a 7-mile segment of a rural divided multilane highway with 10-ft lanes and 8-ft paved shoulders that carries an AADT of 15,000 vehicles per day. The proportion of total crashes constituted by CMF-related crashes is 0.55.
22. An intersection had 25 reported traffic crashes during the months of January through September. The AADT for the intersection is shown. What is the crash rate per million entering vehicles 2000 8000 4000
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