CMF / CRF Details
Replace existing WALK / DON'T WALK signals with pedestrian countdown signal heads
Countermeasure ID: 1409
Description:
Prior Condition: Conventional pedestrian signals, not countdown LED signals.
Category: Intersection traffic control
Study: Pedestrian Countdown Signals: Experience with an Extensive Pilot Installation, Markowitz et al., 2006
| Crash Modification Factor (CMF) |
|---|
| Value: | 0.75 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) |
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| Value: | 25 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability |
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| Crash Type: | Vehicle/pedestrian |
| Crash Severity: | A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Not specified |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | |
| If countermeasure is intersection-based |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | Not specified |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details |
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| Date Range of Data Used: | 1999 to 2002 |
| Municipality: | San Francisco |
| State: | CA |
| Country: | |
| Type of Methodology Used: | Simple before/after |
| Sample Size (crashes): | 27 crashes before, 13 crashes after |
| Other Details |
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| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 01, 2009 |
| Comments: | |
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