CMF / CRF Details
CMF ID: 5168
Convert 6-foot shoulder to 8-foot shoulder
Description: Convert 6-foot shoulder to 8-foot shoulder
Prior Condition: No Prior Condition(s)
Category: Shoulder treatments
Study: Prediction of the Expected Safety Performance of Rural Two-Lane Highways, Harwood et al., 2000
| Star Quality Rating: | Cannot Be Rated (HSM) |
| Rating Points Total: | |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.87 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 13 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Head on,Run off road,Sideswipe,Single vehicle |
| Crash Severity: | All |
| Roadway Types: | Minor Arterial |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 2 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 2000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
| Time of Day: | |
| 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: | |
| Municipality: | |
| State: | No state(s) chosen. |
| Country: | |
| Type of Methodology Used: | Not specified |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | Yes |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | HSM 1st Ed, page 13-11 |
