Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 5, Problem 6P
To determine
The expected number of crashes (per year) after the improvement is constructed.
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A proposed improvement will widen a two-lane rural highway from 9-ft-wide (per lane) to 11-ft-wide (per lane) if the highway has an AADT of 2100 veh/day. If there are an average of 25 crashes per year on the segment proposed for improvement, and 67% of the crashes are of the type targeted by the improvement, estimate the expected number of crashes (per year) after the improvement is constructed.
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- 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.arrow_forwardA stretch of four-lane, two-way highway 5.0 km long has a traffic volume of 35,000 vehicles per day. If for the last three years, the total number of accidents recorded was 1,900, determine the accident rate per 100 marrow_forward1. With the new highway interchange at a dangerous street intersection, police records indicate an average of 5 accidents per month. The Department of Traffic Safety wants to investigate the probability of the following occurring in any month:a) No more than 4 accidents.c) At least 2 accidents.b) A single accident.d) At most 2 accidents in 15 days.arrow_forward
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