| Applicability |
| 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 |
| 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
|
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