CMF / CRF Details
CMF ID: 9147
Install parallelogram-shaped pavement markings on approaches to unsignalized pedestrian crosswalks
Description: Install parallelogram-shaped pavement markings approaches to pedestrian crosswalks to provide optical illusion to drivers approaching pedestrian crosswalks.
Prior Condition: No Prior Condition(s)
Category: Pedestrians
Study: Effects of parallelogram-shaped pavement markings on vehicle speed and safety of pedestrian crosswalks on urban roads in China, Guo et al., 2016
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.789 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.053 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 21.1 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 5.29 |
| Applicability | |
|---|---|
| Crash Type: | Vehicle/pedestrian |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 3 |
| Maximum Number of Lanes: | 3 |
| Number of Lanes Direction: | One Direction |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | 60 |
| Maximum Speed Limit: | 60 |
| Speed Unit: | km/h |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/pedestrian crossing (eg, midblock crossing) |
| Intersection Geometry: | |
| Traffic Control: | Not specified |
| Major Road Traffic Volume: | Minimum of 6989 to Maximum of 27035 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | 11318 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2008 to 2013 |
| Municipality: | Nanning |
| State: | notusa |
| Country: | China |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 177 crashes |
| Sample Size (sites): | 12 sites |
| Sample Size (site-years): | 72 site-years |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jan 17, 2018 |
| Comments: | |
