Applicability |
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Crash Type: | Multiple vehicle |
Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
Roadway Types: | Principal Arterial Interstate |
Street Type: | |
Minimum Number of Lanes: | 6 |
Maximum Number of Lanes: | 8 |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | Not specified |
Road Division Type: | Divided by Median |
Minimum Speed Limit: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | Suburban |
Traffic Volume: | Minimum of 167000 to Maximum of 184000 Annual Average Daily Traffic (AADT) |
Average Traffic Volume: | 176667 Annual Average Daily Traffic (AADT) |
Time of Day: | All |
If countermeasure is intersection-based |
Intersection Type: | |
Intersection Geometry: | |
Traffic Control: | |
Major Road Traffic Volume: | |
Minor Road Traffic Volume: | |
Average Major Road Volume : | |
Average Minor Road Volume : | |
Development Details |
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Date Range of Data Used: | 2011 to 2016 |
Municipality: | |
State: | VA |
Country: | United States |
Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
Sample Size (crashes): | 208 crashes before, 61 crashes after |
Sample Size (sites): | 3 sites before, 3 sites after |
Sample Size (site-years): | 12 site-years before, 3 site-years after |
Sample Size (miles): | 5.8 miles before, 5.8 miles after |
Sample Size (miles): | 23.2 mile-years before, 5.8 mile-years after |