CMF / CRF Details
CMF ID: 2120
Increase pavement marking retroreflectivity of yellow centerlines from X to Y mcd/m^2/lux
Description: Retroflectivity in mcd/m^2/lux
Prior Condition: 2-lane highways with thermoplastic markings
Category: Delineation
Study: A Methodology to Explore the Relationship between Pavement Marking Retroreflectivity and Traffic Crash Frequency on Highways in North Carolina: Application of Artifical Neural Networks and the General, Donnell et al., 2009
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 60 |
| Crash Modification Factor (CMF) | |
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| Value: |  |
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| 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 |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 2 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
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| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
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| Area Type: | |
| Traffic Volume: | Minimum of 2752 to Maximum of 47572 Average Daily Traffic (ADT) |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | |
| Intersection Geometry: | |
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| Major Road Traffic Volume: | |
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| Average Major Road Volume : | |
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| Development Details | |
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| Date Range of Data Used: | 2002 to 2004 |
| Municipality: | |
| State: | NC |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (miles): | 74 miles |
| Other Details | |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | |
