CMF / CRF Details
Install pedestrian countdown timer
Countermeasure ID: 8794
Description: Install pedestrian countdown timer
Prior Condition: No PCS installed
Category: Intersection traffic control
Study: Developing Crash Modification Factors to Quantify Impacts of Pedestrian Countdown Signals to Drivers, Kitali et al., 2017
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.954 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.08 |
| Crash Reduction Factor (CRF) |
|---|
| Value: | 4.6 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 8 |
| Applicability |
|---|
| Crash Type: | Angle |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 6 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | 30 |
| Maximum Speed Limit: | 55 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 4-leg |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | Minimum of 6033 to Maximum of 57458 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 567 to Maximum of 36000 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | 28894 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | 11428 Annual Average Daily Traffic (AADT) |
| Development Details |
|---|
| Date Range of Data Used: | 2003 to 2014 |
| Municipality: | Jacksonville and Gainesville |
| State: | FL |
| Country: | USA |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 582 crashes before, 523 crashes after |
| Sample Size (sites): | 110 sites before, 110 sites after |
| Other Details |
|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Nov 17, 2017 |
| Comments: | |
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