CMF / CRF Details
CMF ID: 8798
Change average illuminance from 1 to X
Description:
Prior Condition: No Prior Condition(s)
Category: Highway lighting
Study: Safety Effects of Street Illuminance on Roadway Segments in Florida, Wang et al., 2017
| 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: | Day time,Nighttime |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | |
| Traffic Volume: | Minimum of 4350 to Maximum of 84750 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 30466 Annual Average Daily Traffic (AADT) |
| Time of Day: | All |
| 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 | |
|---|---|
| Date Range of Data Used: | 2011 to 2014 |
| Municipality: | Tampa Bay |
| State: | FL |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 8923 crashes |
| Sample Size (sites): | 403 sites |
| Sample Size (miles): | 202 miles |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 17, 2017 |
| Comments: | Crash type is night to day crash ratio. |
