Scale and Scope of Safety Assessment Methods in the Project Development Process
Long Description
The predicted average crash frequency for the segment under unique design conditions for fatal plus injury crashes is calculated as:
- The predicted average multi-Vehicle crash frequency of a C-D road segment with base conditions, one-lane, and fatal and injury severity multiplied by the six crash modification factors under the same conditions.
- The predicted average crash frequency for the segment under unique design conditions equals the product of 0.164 and 3.015 and 1.047 and 0.897 and 1.055 and 1.05 and 1.08 equals 0.448.
The predicted average crash frequency for the segment under unique design conditions for property damage only crashes is calculated as:
- The predicted average multi-Vehicle crash frequency of a C-D road segment with base conditions, one lane, and property damage only severity multiplied by the six crash modification factors under the same conditions.
- The predicted average crash frequency for the segment under unique design conditions equals the product of 0.321 and 2.409 and 0.949 and 1.000 and 1.026 and 1.05 and 1.38 equals 0.762.
The predicted average crash frequency for the segment under unique design conditions for fatal plus injury crashes is calculated as:
- The predicted average single-Vehicle crash frequency of a C-D road segment with base conditions, one-lane, and fatal and injury severity multiplied by the six crash modification factors under the same conditions.
- The predicted average crash frequency for the segment under unique design conditions equals the product of 0.149 and 7.224 and 1.047 and 0.897 and 1.055 and 1.05 and 1.08 equals 0.978.
The predicted average crash frequency for the segment under unique design conditions for property damage only crashes is calculated as:
- The predicted average single-Vehicle crash frequency of a C-D road segment with base conditions, one lane, and property damage only severity multiplied by the six crash modification factors under the same conditions.
- The predicted average crash frequency for the segment under unique design conditions equals the product of 0.169 and 9.113 and 0.949 and 1.000 and 1.026 and 1.05 and 1.38 equals 1.516.
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