CMF / CRF Details
CMF ID: 3007
Convert the open median on the major approach of an unsignalized 3-leg intersection to a directional median
Description: Convert the open median on the major approach of an unsignalized 3-leg intersection to a directional median
Prior Condition: unsignalized 3-leg intersection with an open median on the major approach
Category: Access management
Study: The Group Least Absolute Shrinkage and Selection Operator "GLASSO" Technique: Application in Variable Selection and Crash Prediction at Unsignalized Intersections, Haleem and Abdel-Aty, 2010
Star Quality Rating: | [View score details] |
Rating Points Total: | 75 |
Crash Modification Factor (CMF) | |
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Value: | 0.86 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.1297 |
Crash Reduction Factor (CRF) | |
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Value: | 14 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 12.97 |
Applicability | |
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Crash Type: | All |
Crash Severity: | All |
Roadway Types: | Not Specified |
Street Type: | |
Minimum Number of Lanes: | 2 |
Maximum Number of Lanes: | 8 |
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: | All |
Traffic Volume: | |
Average Traffic Volume: | |
Time of Day: | All |
If countermeasure is intersection-based | |
Intersection Type: | Roadway/roadway (not interchange related) |
Intersection Geometry: | 3-leg |
Traffic Control: | Stop-controlled |
Major Road Traffic Volume: | |
Minor Road Traffic Volume: | |
Average Major Road Volume : | |
Average Minor Road Volume : |
Development Details | |
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Date Range of Data Used: | 2003 to 2006 |
Municipality: | |
State: | FL |
Country: | U.S.A. |
Type of Methodology Used: | Regression cross-section |
Sample Size (sites): | 1735 sites |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Jul 15, 2011 |
Comments: |