CMF / CRF Details
CMF ID: 8799
Install raised median with or without marked crosswalk (uncontrolled)
Description:
Prior Condition: No median
Category: Pedestrians
Study: Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing Treatments, Zegeer et al., 2017
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 115 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.685 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.183 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 31.5 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 18.3 |
| Applicability | |
|---|---|
| Crash Type: | Vehicle/pedestrian |
| 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: | Meta-analysis |
| Sample Size (crashes): | 6 crashes before, 13 crashes after |
| Sample Size (sites): | 68 sites before, 68 sites after |
