A 1.5-mile section of a two-lane road has an AADT of 10,000. In a three-year period, there have been 6 fatal accidents and 12 non-fatal accidents. The state allows 350 accidents per 100 mym for three years, of which 100 are fatal. For which value of confidence level, this highway is considered safe? If the following countermeasures are implemented: widening the existing lane by 2 feet and widening the existing shoulder by 2 feet paved, and widening the clear zone by 5 feet, what will be the number of accidents reduced if the AADT became 12,000?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A 1.5-mile section of a two-lane road has an AADT of 10,000. In a three-year period,
there have been 6 fatal accidents and 12 non-fatal accidents. The state allows 350
accidents per 100 mvm for three years, of which 100 are fatal. For which value of
confidence level, this highway is considered safe?
If the following countermeasures are implemented: widening the existing lane by 2 feet,
and widening the existing shoulder by 2 feet paved, and widening the clear zone by 5
feet, what will be the number of accidents reduced if the AADT became 12,000?
Transcribed Image Text:A 1.5-mile section of a two-lane road has an AADT of 10,000. In a three-year period, there have been 6 fatal accidents and 12 non-fatal accidents. The state allows 350 accidents per 100 mvm for three years, of which 100 are fatal. For which value of confidence level, this highway is considered safe? If the following countermeasures are implemented: widening the existing lane by 2 feet, and widening the existing shoulder by 2 feet paved, and widening the clear zone by 5 feet, what will be the number of accidents reduced if the AADT became 12,000?
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