CMF / CRF Details
CMF ID: 125
Install centerline rumble strips
Description:
Prior Condition: No Prior Condition(s)
Category: Roadway
Study: Crash Reduction Following Installation of Centerline Rumble Strips on Rural Two-Lane Roads, Persaud et al., 2003
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 130 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.85 |
| Adjusted Standard Error: | 0.08 |
| Unadjusted Standard Error: | 0.04 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 15 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | 8 |
| Unadjusted Standard Error: | 4 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Principle Arterial Other |
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| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 2 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
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| Area Type: | Rural |
| Traffic Volume: | Minimum of 5000 to Maximum of 22000 Average Daily Traffic (ADT) |
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| If countermeasure is intersection-based | |
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| Development Details | |
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| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
