CMF / CRF Details
CMF ID: 11189
Protect Side Slopes with Guardrails
Description:
Prior Condition: 1V:6H to 1V:4H side slopes, 20 utility poles per mile or less, and 20 ft or less of lateral offset.
Category: Roadside
Study: Developing Crash Modification Factors for Guardrails, Utility Poles, and Side-Slope Improvements, Avelar et al., 2021
Star Quality Rating: | [View score details] |
Rating Points Total: | 75 |
Crash Modification Factor (CMF) | |
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Value: | 0.648 |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 0.313 |
Crash Reduction Factor (CRF) | |
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Value: | 35.2 (This value indicates a decrease in crashes) |
Adjusted Standard Error: | |
Unadjusted Standard Error: | 31.3 |
Applicability | |
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Crash Type: | All |
Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
Roadway Types: | All |
Street Type: | Two-Way |
Minimum Number of Lanes: | |
Maximum Number of Lanes: | |
Number of Lanes Direction: | |
Number of Lanes Comment: | |
Crash Weather: | All |
Road Division Type: | |
Minimum Speed Limit: | |
Maximum Speed Limit: | |
Speed Unit: | |
Speed Limit Comment: | |
Area Type: | Rural |
Traffic Volume: | Minimum of 1531 to Maximum of 26560 Annual Average Daily Traffic (AADT) |
Average Traffic Volume: | 7224 Annual Average Daily Traffic (AADT) |
Time of Day: | All |
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 | |
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Date Range of Data Used: | 2008 to 2013 |
Municipality: | |
State: | IN,PA |
Country: | USA |
Type of Methodology Used: |
Other Details | |
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Included in Highway Safety Manual? | No |
Date Added to Clearinghouse: | Aug 25, 2022 |
Comments: | This CMF is for protecting 1V:6H to 1V:4H side slopes with guardrails. |