1. Countdown Pedestrian Signals Presentation by Jack Fleck, City/County of San Francisco February 28, 2006

2. Countdown Questions Will cars speed up to make the light? Will more pedestrians start to cross on the Flashing Red Hand? Is it better to start the countdown on the Flashing Red Hand or on the Walk symbol? Will pedestrians be able to judge how much time it takes them to cross? Will the intersections be safer?

3. Pilot Project--2001 Countdown signals initially installed at 14 test locations, 9 assessed. City eventually replaced pedestrian signals with Countdown Signals (over 700 intersections). More energy-efficient, so electricity savings will eventually pay for LED device installation

5. Additional Pilot Study Results

6. Citywide Countdown Results: Pedestrian Related Collisions 2001200220032004 With pedestrian signals (579 sites) 186193159142 Without pedestrian signals (204 sites) 43524456 Citywide reported total 832844771683 BeforeAfterChange% Change With pedestrian signals (579 sites) 190142-48-25% Without pedestrian signals (204 sites) 4856816%

7. Countdown Signals: Impact on Vehicle Collisions 2001200220032004 With pedestrian signals (579 sites) 498471383320 Without pedestrian signals (204 sites) 168213180163 Citywide reported total 1697179615381315 BeforeAfterChange% Change With pedestrian signals (579 sites) 485320-165-34% Without pedestrian signals (204 sites) 191163-28-15%