CMF / CRF Details
CMF ID: 10756
Crash modification factor for median width of X ft
Description: This CMF is presented for medians where X is median width in ft
Prior Condition: Undivided Roadway
Category: Roadway
Study: Context-based Crash Modification Factors for Medians on Rural Four-Lane Roadways: A Bayesian Approach, Li et al., 2021
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 40 |
| Crash Modification Factor (CMF) | |
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| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
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| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other |
| Street Type: | |
| Minimum Number of Lanes: | 4 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Undivided |
| Minimum Speed Limit: | 50 |
| Maximum Speed Limit: | 65 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 3000 to Maximum of 24000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 8457 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: | 2013 to 2018 |
| Municipality: | |
| State: | GA |
| Country: | |
| Type of Methodology Used: | |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jul 01, 2021 |
| Comments: | Applies to conversion of undivided four-lane roadway to roadway with a 4-foot flushed median. |
