CMF / CRF Details
Install transverse rumble strips at pedestrian crosswalks on rural low-volume roads
Countermeasure ID: 3070
Description:
Prior Condition: without transverse rumble strips
Category: Roadway
Study: Effects of Transverse Rumble Strips on Safety of Pedestrian Crosswalks on Rural Low-Volume Roads in China, Liu et al., 2011
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.76 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.33 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 24 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 33 |
| Applicability |
|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Not Specified |
| Street Type: | |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | 40 |
| Maximum Speed Limit: | 80 |
| Speed Unit: | km/h |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| 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 : | |
| Average Minor Road Volume : | |
| Development Details |
|---|
| Date Range of Data Used: | 2007 to 2009 |
| Municipality: | Yangjiang, Guangdong |
| State: | |
| Country: | China |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 15 crashes before, 6 crashes after |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jul 15, 2011 |
| Comments: | |
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