CMF / CRF Details
CMF ID: 11192
Protect Side Slopes with Guardrails
Description:
Prior Condition: 1V:4H to 1V:3H 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) | |
|---|---|
| Value: | 0.607 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.29 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 39.3 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 29 |
| Applicability | |
|---|---|
| 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: | |
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| 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 | |
|---|---|
| Date Range of Data Used: | 2008 to 2013 |
| Municipality: | |
| State: | IN,PA |
| Country: | USA |
| Type of Methodology Used: | |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 25, 2022 |
| Comments: | This CMF is for protecting 1V:4H to 1V:3H side slopes with guardrails. |
