CMF / CRF Details
CMF ID: 7564
Change negative vertical grade from G1 to G2
Description: Change negative vertical grade from G1 to G2 in percent.
Prior Condition: No Prior Condition(s)
Category: Alignment
Study: Development of Crash Modification Factors of Alignment Elements and Safety Countermeasures for Korean Freeways, Choi et al., 2015
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 115 |
| Crash Modification Factor (CMF) | |
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| Value: |  |
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| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: |  |
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| Unadjusted Standard Error: | |
| Applicability | |
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| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
| Street Type: | |
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| Maximum Number of Lanes: | |
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| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
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| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | |
| Traffic Volume: | Minimum of 4263 to Maximum of 57699 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
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| If countermeasure is intersection-based | |
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| Development Details | |
|---|---|
| Date Range of Data Used: | 2001 to 2005 |
| Municipality: | |
| State: | notusa |
| Country: | Korea |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (sites): | 3315 sites |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 01, 2015 |
| Comments: | |
