CMF / CRF Details
CMF ID: 3940
Change number of 3-leg intersections from X to Y
Description:
Study relates number of crashes in small geographic area (census block group) to number of 3-leg intersections in the same area.
Prior Condition: Existing number of 3-leg intersections in the study area is X.
Category: Access management
| Crash Modification Factor (CMF) |
|---|
| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) |
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| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability |
|---|
| Crash Type: | Angle,Cross median,Head on,Left turn,Rear end,Rear to rear,Right turn,Sideswipe |
| 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: | All |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based |
| Intersection Type: | Not specified |
| Intersection Geometry: | 3-leg |
| Traffic Control: | Not specified |
| 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 2007 |
| Municipality: | San Antonio-Bexar County |
| State: | TX |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 217028 crashes |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jun 04, 2012 |
| Comments: | Roadway Type: All except local.Crash Type: Multiple-vehicleThe study calibrated crash models on regional-level and not intersection-level. The metro region is divided as census block groups. |
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