CMF / CRF Details

CMF ID: 8442

Install intersection conflict warning systems (ICWS) for two-lane at two-lane intersections

Description:

Prior Condition: No intersection conflict warning systems

Category: Signs

Study: Multi-State Safety Evaluation of Intersection Conflict Warning Systems (ICWS), Himes et al, 2016

 
Star Quality Rating: 5 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.7
Adjusted Standard Error:
Unadjusted Standard Error: 0.05
Crash Reduction Factor (CRF)
Value: 30 (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 5
Applicability
Crash Type: All
Crash Severity: Serious injury,Minor injury
Roadway Types: Not specified
Number of Lanes: 2
Road Division Type:
Speed Limit:
Area Type: Rural
Traffic Volume:
Time of Day: Not specified
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: 4-leg
Traffic Control: Stop-controlled
Major Road Traffic Volume:
Minor Road Traffic Volume:
Development Details
Date Range of Data Used:
Municipality:
State: MN, MO, NC
Country:
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Sample Size Used:
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jan-17-2017
Comments:

[View the Full Study Details]

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.