CMF / CRF Details
Install raised median with or without marked crosswalk (uncontrolled)
Countermeasure ID: 9015
Description:
Prior Condition: No median
Category: Pedestrians
Study: Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing Treatments, Zegeer et al., 2017
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.741 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.093 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 25.9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 9.3 |
| Applicability |
|---|
| Crash Type: | Rear end,Sideswipe |
| Crash Severity: | All |
| Roadway Types: | Minor Arterial |
| 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: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban and suburban |
| Traffic Volume: | Minimum of 1245 to Maximum of 46000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 12599 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: | 2004 to 2013 |
| Municipality: | |
| State: | AZ,FL,IL,MA,NY,NC,OR,VA,WI |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 4444 crashes |
| Sample Size (site-years): | 5021 site-years |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 17, 2017 |
| Comments: | Study sites were a combination of intersection and mid-block locations. |
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