CMF / CRF Details
Install cable median barrier (high tension)
Countermeasure ID: 5236
Description:
Prior Condition: No Cable Median Barrier
Category: Roadside
Study: In-Service Performance Evaluation (ISPE) for G4 (1S) Type of Strong-Post W-Beam Guardrail System and Cable Median Barrier: Volume II, Alluri, P., K. Hallem, and A. Gan., 2012
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.799 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.215 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 20.1 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 21.5 |
| Applicability |
|---|
| Crash Type: | Other |
| Crash Severity: | A (serious injury) |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
| 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: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | |
| Traffic Volume: | Minimum of 37429 to Maximum of 74191 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
| Time of Day: | |
| 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: | 2003 to 2010 |
| Municipality: | |
| State: | FL |
| Country: | |
| Type of Methodology Used: | Simple before/after |
| Sample Size (crashes): | 31 crashes before, 30 crashes after |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 02, 2013 |
| Comments: | Median Related Crashes |
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