CMF / CRF Details
CMF ID: 10130
Install Advance Downgrade Warning Sign
Description: Advance sign to warn drivers of downgrades
Prior Condition: No Prior Condition(s)
Category: Signs
Study: Evaluating the Safety Effectiveness of Advance Downgrade Warning Signs in Preventing Downgrade Truck Crashes using a Propensity Scores Framework, Moomen et al., 2019
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.866 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: | 13.4 (This value indicates a decrease in crashes) |
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| Applicability | |
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| Crash Type: | Truck related |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Interstate |
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| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
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| Area Type: | Rural |
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| If countermeasure is intersection-based | |
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| Development Details | |
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| Date Range of Data Used: | |
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| State: | WY |
| Country: | USA |
| Type of Methodology Used: | Non-regression cross-section |
| Sample Size (crashes): | 2974 crashes |
