CMF / CRF Details
CMF ID: 6683
Pave shoulder
Description:
Prior Condition: Deteriorated shoulder
Category: Shoulder treatments
Study: Safety Impacts of Highway Shoulder Attributes in Illinois, Bamzai et al., 2011
| Star Quality Rating: |
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| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.77 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 23 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Fixed object,Head on,Run off road,Sideswipe |
| Crash Severity: | K (fatal) |
| Roadway Types: | Principal Arterial Interstate |
| Number of Lanes: | |
| Road Division Type: | Divided by Median |
| Speed Limit: | 65 |
| Area Type: | Rural |
| Traffic Volume: | Maximum of 30000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
| 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 : | NULL Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | NULL Annual Average Daily Traffic (AADT) |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2000 to 2006 |
| Municipality: | |
| State: | IL |
| Country: | USA |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
