CMF / CRF Details
CMF ID: 10033
Install snow fencing
Description:
Prior Condition: No Snow Fencing Along Roadside
Category: Roadside
Study: Quantifying the Safety Effectiveness of Snow Fence Implementations Based on Crash Severity and Snow Fence Type Utilizing Contemporary Statistical Methods, Larson et al., 2019
| Star Quality Rating: | Cannot Be Rated (Insufficient Information) |
| Rating Points Total: | |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.67 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.025 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 33 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 2.5 |
| Applicability | |
|---|---|
| Crash Type: | Other |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Interstate |
| Street Type: | |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| 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: | 2003 to 2017 |
| Municipality: | |
| State: | WY |
| Country: | United States |
| Type of Methodology Used: | Other before/after |
| Sample Size (crashes): | 1443 crashes before, 1139 crashes after |
| Sample Size (miles): | 148 miles before, 148 miles after |
