CMF / CRF Details

Flatten sideslope from 1V:3H to 1V:4H

Description:

Prior Condition: No Prior Condition(s)

Category: Roadside

Study: Measuring the Goodness of Fit of Accident Prediction Models, Miaou, S. P., 1996

 
Star Quality Rating: 3 Stars
Crash Modification Factor (CMF)
Value: 0.82
Adjusted Standard Error: 0.16
Unadjusted Standard Error: 0.11
Crash Reduction Factor (CRF)
Value: 18 (This value indicates a decrease in crashes)
Adjusted Standard Error: 16
Unadjusted Standard Error: 11
Applicability
Crash Type: Run off road
Crash Severity: All
Roadway Types: Not specified
Number of Lanes: 2
Road Division Type:
Speed Limit:
Area Type: Rural
Traffic Volume: Not specified
Time of Day:
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Development Details
Date Range of Data Used:
Municipality:
State:
Country:
Type of Methodology Used: Regression cross-section
Sample Size Used:
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: 11-01-2009
Comments:

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The information contained in the Crash Modification Factors (CMF) Clearinghouse is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in the CMF Clearinghouse. The information contained in the CMF Clearinghouse does not constitute a standard, specification, or regulation, nor is it a substitute for sound engineering judgment.