Scale and Scope of Safety Assessment Methods in the Project Development Process
Long Description
Table calculates the predicted number of segment-related total and injury crashes on rural undivided roads.
The predicted number of rural undivided segment-related crashes is calculated as:
- Predicted average crash frequency for segment-related crashes equals the product of the average total crash frequency for rural undivided segment-related crashes and the lane width crash modification factor and the shoulder width and type crash modification factor and the local calibration factor. (Equations with lane and shoulder CMFs and the local calibration factor)
Predicted number of rural undivided segment-related total crashes is calculated as:
- Predicted average crash frequency for existing segment-related total crashes equals the product of 4.49 and the product of 1.0 and 0.96 and 1.0 equals 4.31. (Existing)
- Predicted average crash frequency for alternative segment-related total crashes equals the product of 4.49 and the product of 1.01 and 1.0 and 1.0 equals 4.53. (Alternative)
Predicted number of rural undivided segment-related fatal and injury crashes is calculated as:
- Predicted average crash frequency for existing segment-related fatal and injury crashes equals the product of 2.46 and the product of 1.0 and 0.96 and 1.0 equals 2.36. (Existing)
- Predicted average crash frequency for alternative segment-related fatal and injury crashes equals the product of 2.46 and the product of 1.01 and 1.0 and 1.0 equals 2.48. (Alternative)
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