CMF / CRF Details
CMF ID: 7921
Increase pavement friction from F1 to F2
Description: Increase pavement friction from F1 to F2
Prior Condition: Pavement friction F1
Category: Roadway
Study: Modeling the Effect of Road Surface Friction on the Accident Rate of Urban Un-Signalized Intersections, Amini and Beigi, 2015
Star Quality Rating: | [View score details] |
Rating Points Total: | 65 |
Crash Modification Factor (CMF) | |
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Applicability | |
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Crash Type: | Wet road |
Crash Severity: | A (serious injury),B (minor injury),C (possible injury),O (property damage only) |
Roadway Types: | Not specified |
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Minimum Number of Lanes: | |
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Number of Lanes Comment: | |
Crash Weather: | Wet road |
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Area Type: | Urban |
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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 |
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Development Details | |
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Date Range of Data Used: | 2010 to 2011 |
Municipality: | Tehran |
State: | notusa |
Country: | Iran |
Type of Methodology Used: | Regression cross-section |
Sample Size (crashes): | 199 crashes |
Sample Size (sites): | 32 sites |
Sample Size (site-years): | 64 site-years |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Mar 08, 2016 |
Comments: | CMF/CRF is calculated as the number of crashes per hundred million vehicles. |