CMF / CRF Details

CMF ID: 9148

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: 2 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 1.054
Adjusted Standard Error:
Unadjusted Standard Error: 0.029
Crash Reduction Factor (CRF)
Value: -5.4   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 2.86
Applicability
Crash Type: Rear end
Crash Severity: All
Roadway Types: Not specified
Number of Lanes: 3-directional
Road Division Type: Divided by Median
Speed Limit: 60 km/h
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: No values chosen.
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:
Country: China
Type of Methodology Used: Regression cross-section
Sample Size (crashes): 375 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: