CMF / CRF Details
CMF ID: 7448
Modify spacing between two consecutive entrance ramps from S1 (ft) to S2 (ft)
Description:
Prior Condition: No Prior Condition(s)
Category: Interchange design
Study: Guidelines for Ramp and Interchange Spacing, Ray et al., 2011
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 0 |
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| Applicability | |
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| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
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| Crash Weather: | Not specified |
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| Traffic Volume: | Minimum of 3459 to Maximum of 99030 Annual Average Daily Traffic (AADT) |
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| If countermeasure is intersection-based | |
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| Development Details | |
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| State: | CA,WA |
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| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 864 crashes |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jun 22, 2015 |
| Comments: | ADT range for ramps was 200 to 27,000. |
