CMF / CRF Details

CMF ID: 2381

Widen paved shoulder from X to Y ft

Description: Widen paved shoulder at rural intersection of 2-lane roads from X to Y ft.

Prior Condition: Increase the paved shoulder from X ft to Y ft at a rural 2-lane intersection.

Category: Shoulder treatments

Study: A Simultaneous Equations Model of Crash Frequency By Collision Type for Rural Intersections, Ye et al., 2008

Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 100
Crash Modification Factor (CMF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: Sideswipe
Crash Severity: All
Roadway Types: Not Specified
Street Type:
Minimum Number of Lanes: 2
Maximum Number of Lanes: 2
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather: Not specified
Road Division Type: Undivided
Minimum Speed Limit: 25
Maximum Speed Limit: 55
Speed Unit: mph
Speed Limit Comment:
Area Type: Rural
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: Not specified
Traffic Control: Not specified
Major Road Traffic Volume: Minimum of 420 to Maximum of 15200
Minor Road Traffic Volume: Minimum of 80 to Maximum of 10400
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used: 1996 to 1997
Municipality: 38 Counties
State: GA
Type of Methodology Used: Regression cross-section
Sample Size (site-years): 330 site-years
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: