CMF / CRF Details
Change in signal spacing from X 1000's feet to Y 1000's feet
Countermeasure ID: 2454
Description: Change the distance between signals in 1000's feet
Prior Condition: Smaller or larger distance between signals in 1000's feet
Category: Access management
Study: Modeling and Evaluating the Safety Impacts of Access Management (AM) Features in the Las Vegas Valley, Mauga and Kaseko, 2010
| 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: | Angle,Fixed object,Head on,Rear end,Run off road,Sideswipe,Single vehicle |
| Crash Severity: | All |
| Roadway Types: | All |
| Street Type: | |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | 30 |
| Maximum Speed Limit: | 45 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | Minimum of 29320 to Maximum of 96080 |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| 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: | 2002 to 2006 |
| Municipality: | |
| State: | NV |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Other Details |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 11, 2010 |
| Comments: | |
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