Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 5, Problem 15P
To determine
An appropriate countermeasure and the estimated yearly reduction in total crashes.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The crash rate on a heavily traveled two-lane rural highway is abnormally high. Thecorridor is 14 miles long with an ADT of 34,000. An investigation has determined thathead-on collisions are most common with an RMVMT of 4.5 and are caused by vehicles attempting to pass. Determine an appropriate countermeasure and calculate theestimated yearly reduction in total crashes.
The accident rates for 100 million vehicles miles of travel caused by people attempting to pass a heavily traffic 2 lane rural highway is 6.0. The length of the road is 10 miles with an average daily traffic of 36000. Determine the estimated yearly reduction in total crashes if the crash reduction factor is 0.25.
The number of accidents for 6 years recorded in a certain section of a highway is 5892. If the average daily traffic is 476, what is the accident rate per HMVM in a segment of 10 miles?
Chapter 5 Solutions
Traffic and Highway Engineering
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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.arrow_forwardA state transportation agency want to evaluate engineering countermeasures applied to a two-lane,two-way rural highway segment.This 4 miles segment has been identified as having 14,19,and 23 total crashes in the last three years,before the implementation of the countermeasures.The AADT at the segment for last three years is 5630 vehicles per day and the AADT for after implementation is 6240 vehicles per day.Compute the expected average crash frequency for the after period, assuming the treatment was not implemented.The segment has the same conditions as the base conditions established for SPF.arrow_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
- The number of accidents for 6 years recorded in a certain section of a highway is 589. If the average daily traffic is 476, determine the accident rate per million entering vehicles.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_forwardFind the accident rate at a road intersection per million entering vehicles if the average daily traffic is 328 and 1,751 accidents had occurred in the last 4 years. Express your answer in whole number.arrow_forward
- Find the accident rate at a road intersection per million entering vehicles if the average daily traffic is 348 and 1769 accidents had occured in the last 3 years. Express your answer in whole number.arrow_forwardA municipal council on transportation is taking into account whether to base a recovery vehicle on a stretch of an highway to help clear incidents as fast a possible. The highway concerned carries over 5000 vehicles during the peak rush hour period. Traffic records show that on average, the number of incidents during the AM rush hour is 5. The council rejects any provision for a vehicle on the road if the probability of having more than 5 incidents in any one morning is less than 30%. Based on this information, should the council provide a vehicle?arrow_forwardAn urban arterial street segment 0.2 km long has an average annual daily traffic (AADT) of 15,400 veh/day. In a three-year period, there have been 8 crashes resulting in death and/or injuries and 15 involving property damage only. The statewide average crash experience for similar types of roadway is 375 per 100 mv-km for a three-year period of which 120 involved death and/or injury and 255 caused property damage only. Is the 0.2 km long street segment hazardous? In identifying hazardous locations, consider that a single death/injury crash is equivalent to three property damage crashes. Use a 95% confidence level. (Highway & Engineering Traffic Engineering, SI unit, N. Garber)arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning