CMF / CRF Details
CMF ID: 7445
Modify spacing between entrance and exit 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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| Value: |  |
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| Applicability | |
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| Crash Type: | All |
| Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
| Street Type: | |
| Minimum Number of Lanes: | |
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| Number of Lanes Direction: | |
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| Crash Weather: | Not specified |
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| Area Type: | |
| Traffic Volume: | Minimum of 15928 to Maximum of 104079 Annual Average Daily Traffic (AADT) |
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| If countermeasure is intersection-based | |
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| Development Details | |
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| Date Range of Data Used: | 2005 to 2007 |
| Municipality: | |
| State: | WA |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 1783 crashes |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jun 22, 2015 |
| Comments: | ADT range on ramps was 100 to 31,000. |
