A rural primary road segment of 2 miles long has an average annual daily traffic(AADT) of 11,350. The number of crashes that have occurred over the past 5 yearsare 5 fatal, 55 injury crashes and 100 property damage only crashes. Statewide averagecrashes for this type of road are 2 fatal, 130 injury, and 300 property damage onlycrashes per 100 MVMT. The weighting factors for fatal, injury and property crashesare 8, 3, 1, respectively. Using the critical crash ratio methodology, determine whetherthis site can be labeled a hazardous site. Use a 95 percent confidence limit.
A rural primary road segment of 2 miles long has an average annual daily traffic(AADT) of 11,350. The number of crashes that have occurred over the past 5 yearsare 5 fatal, 55 injury crashes and 100 property damage only crashes. Statewide averagecrashes for this type of road are 2 fatal, 130 injury, and 300 property damage onlycrashes per 100 MVMT. The weighting factors for fatal, injury and property crashesare 8, 3, 1, respectively. Using the critical crash ratio methodology, determine whetherthis site can be labeled a hazardous site. Use a 95 percent confidence limit.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A rural primary road segment of 2 miles long has an average annual daily traffic
(AADT) of 11,350. The number of crashes that have occurred over the past 5 years
are 5 fatal, 55 injury crashes and 100 property damage only crashes. Statewide average
crashes for this type of road are 2 fatal, 130 injury, and 300 property damage only
crashes per 100 MVMT. The weighting factors for fatal, injury and property crashes
are 8, 3, 1, respectively. Using the critical crash ratio methodology, determine whether
this site can be labeled a hazardous site. Use a 95 percent confidence limit.
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