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: 3 Stars   [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
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
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