CMF / CRF Details
CMF ID: 6707
Add new paved shoulder
Description: Add a new paved shoulder where there is currently no paved shoulder
Prior Condition: No paved shoulder
Category: Shoulder treatments
Study: Safety Impacts of Highway Shoulder Attributes in Illinois, Bamzai et al., 2011
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 75 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.57 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 43 (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: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 3 |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | Both Directions |
| Number of Lanes Comment: | Multi Lane |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | 35 |
| Maximum Speed Limit: | 65 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | Minimum of 20000 to 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 |
| Sample Size (crashes): | NULL crashes |
| Sample Size (sites): | NULL sites |
| Sample Size (site-years): | NULL site-years |
| Sample Size (miles): | NULL miles |
| Sample Size (mile-years): | NULL mile-years |
