CMF / CRF Details
CMF ID: 10369
Install pedestrian countdown timer
Description: Install pedestrian countdown timer
Prior Condition: Intersections without countdown times (but with pedestrian signals)
Category: Intersection traffic control
Study: A Justification for Pedestrian Countdown Signals at Signalized Intersections: The Safety Impact on Senior Motorists, Boateng et al., 2019
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 100 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.81 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.06 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 19 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 6 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | All |
| Street Type: | |
| Minimum Number of Lanes: | 1 |
| Maximum Number of Lanes: | 10 |
| 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: | Not specified |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Not specified |
| Intersection Geometry: | Not specified |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | Minimum of 1637 to Maximum of 70100 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 730 to Maximum of 35214 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | 14072 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | 7348 Annual Average Daily Traffic (AADT) |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2004 to 2016 |
| Municipality: | |
| State: | MI |
| Country: | |
| Type of Methodology Used: | Before/after using comparison group |
| Sample Size (crashes): | 710 crashes before, 661 crashes after |
| Sample Size (sites): | 93 sites before, 93 sites after |
| Sample Size (site-years): | 465 site-years before, 465 site-years after |
