CMF / CRF Details
CMF ID: 1188
Install centerline rumble strips
Description:
Prior Condition: No centerline rumble strips installed on two-way two-lane roadways.
Category: Roadway
Study: Developing Optimal Centerline Rumble Strips and Evaluating Their Safety Benefits on National Highways in Hokkaido, Japan, Hirasawa et al., 2006
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 0 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.45 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 55 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Head on |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | Undivided |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| 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: | 2000 to 2004 |
| Municipality: | Hokkaido, Japan |
| State: | notusa |
| Country: | |
| Type of Methodology Used: | Simple before/after |
| Sample Size (crashes): | 42 crashes before, 19 crashes after |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | |
