For a specific rural road segment in northeast Colorado, the total number of crashes as well as the number of fatal crashes have been recorded. Using the data provided with a traffic analysis within two standard deviations (or 95% confidence interval), determine if this site should be flagged for further study.
For a specific rural road segment in northeast Colorado, the total number of crashes as well as the number of fatal crashes have been recorded. Using the data provided with a traffic analysis within two standard deviations (or 95% confidence interval), determine if this site should be flagged for further study.
Data:
Length of road segment = 2 mi.
AADT = 11,350 veh/day
Total number of injury crashes for past 5 years = 55
Total number of fatal crashes for past 5 years = 5
Total number of property-only crashes for past 5 years = 100
Average number of statewide injury crashes for rural roads over past 5 years = 1.30 per 106 VMT
Average number of statewide fatal crashes for rural roads over past 5 years = 0.02 per 106 VMT
Average number of statewide property only crashes for rural roads over past 5 years = .033 per 106 VMT
Weighted average crash rate of injury crashes for rural Colorado roads = 3
Weighted average crash rate of fatal crashes for rural Colorado roads = 8
Weighted average crash rate of property only crashes for rural Colorado roads = 1
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
