CMF / CRF Details
Widen shoulder
Countermeasure ID: 8716
Description:
Prior Condition: Roadway with narrower shoulders
Category: Shoulder treatments
Study: Evaluation of Safety Effectiveness of Multiple Cross Sectional Features on Urban Arterials, Park and Abdel-Aty, 2016
| 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: | Vehicle/bicycle |
| Crash Severity: | K (fatal),A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Principal Arterial Other |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 8 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | All |
| Minimum Speed Limit: | 20 |
| Maximum Speed Limit: | 65 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | Minimum of 1000 to Maximum of 94500 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 31880 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 |
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| Date Range of Data Used: | 2008 to 2012 |
| Municipality: | |
| State: | FL |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 2170 crashes |
| Sample Size (sites): | 6420 sites |
| Sample Size (site-years): | 32100 site-years |
| Sample Size (miles): | 2514 miles |
| Sample Size (mile-years): | 12570 mile-years |
| Other Details |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 06, 2017 |
| Comments: | The CMF is for KABC crashes. CMF applies to urban arterials. |
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