CMF / CRF Details

CMF ID: 50

Install beam guardrails on median of divided highway

Description:

Prior Condition:  No Prior Condition(s)

Category: Roadside

Study: The Median and Safety, Hauer, E., 2000

 
Star Quality Rating:Cannot Be Rated (Insufficient Information)
Rating Points Total:
Crash Modification Factor (CMF)
Value:1.4
Adjusted Standard Error:
Unadjusted Standard Error:0.11
Crash Reduction Factor (CRF)
Value:-40  (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:11
Applicability
Crash Type:All
Crash Severity:O (property damage only)
Roadway Types:Principal Arterial Other Freeways and Expressways
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:Not specified
Traffic Volume:
Average Traffic Volume:
Time of Day:
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:
Municipality:
State:
Country:
Type of Methodology Used:Simple before/after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 01, 2009
Comments: