CMF / CRF Details
CMF ID: 2385
Increase the number of right-turn lanes on the major road from X to Y
Description: Increase the number of right-turn lanes on the major road from X to Y lanes at rural 2-lane intersections.
Prior Condition: Install right-turn lane on the major road at rural 2-lane intersection to increase the number of right-turn lanes from X to Y.
Category: Intersection geometry
Study: A Simultaneous Equations Model of Crash Frequency By Collision Type for Rural Intersections, Ye et al., 2008
Star Quality Rating: | [View score details] |
Rating Points Total: | 90 |
Crash Modification Factor (CMF) | |
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Value: | |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Crash Reduction Factor (CRF) | |
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Value: | |
Adjusted Standard Error: | |
Unadjusted Standard Error: |
Applicability | |
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Crash Type: | Rear end |
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 Annual Average Daily Traffic (AADT) |
Minor Road Traffic Volume: | Minimum of 80 to Maximum of 10400 Annual Average Daily Traffic (AADT) |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 1996 to 1997 |
Municipality: | 38 Counties |
State: | GA |
Country: | |
Type of Methodology Used: | Regression cross-section |
Sample Size (site-years): | 330 site-years |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jan 01, 1970 |
Comments: |