CMF / CRF Details

CMF ID: 5234

Convert from two-way to one-way traffic


Prior Condition: two-way traffic on corridor near intersection

Category: Roadway

Study: Corridor-level signalized intersection safety analysis in Shanghai, China using Bayesian hierarchal models, Kun Xie, Xuesong Wang, Helai Huang, Xiahong Chen, 2013

Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 80
Crash Modification Factor (CMF)
Value: 0.53
Adjusted Standard Error:
Unadjusted Standard Error: 0.17
Crash Reduction Factor (CRF)
Value: 47   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 17.2
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:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type: Urban
Traffic Volume: Minimum of 7500 to Maximum of 56400 Average Daily Traffic (ADT)
Average Traffic Volume: 26200 Average Daily Traffic (ADT)
Time of Day: Not specified
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: 2009 to 2009
Country: China
Type of Methodology Used: Regression cross-section
Sample Size (site-years): 195 site-years
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Dec-02-2013