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Bad Design. Intersection Stop Markers. Presented By Joy D. Barbara. Designed to be a permanent visual signal that shows where a vehicle should safely stop. The Problem. Line does not physically stop vehicles No room for vehicles to turn Cars over the line unable to back up in heavy traffic - PowerPoint PPT Presentation
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Bad DesignIntersection Stop Markers
Presented By Joy D. Barbara
Designed to be a permanent visual signal that shows where a vehicle should safely stop
The Problem Line does not physically stop vehicles No room for vehicles to turn Cars over the line unable to back up in
heavy traffic Chain-reaction
› Traffic STOPS› Congestion INCREASES› ACCIDENTS OCCUR
Most common types of collisions at signalized intersections
Sideswipe 12%
Rear End 42%
Broadside 28%
A barrier would give motorists a visual and physical reminder of where to stop
The gate would be timed to work with the traffic lights, DOWN on Green, UP on Red
References Slide 2 http://maps.google.com/maps?hl=en&tab=wl Slide 3 J. Barbara http://maps.google.com/maps?hl=en&tab=wl Slide 4 www.fhwa.dot.gov/publications/research/safety/04091/02.cfm#table7
http://www.flickr.com/photos/brendanfalkowski/1270118330/ Slide 5 http://maps.google.com/maps?hl=en&tab=wl Slide 6 J. Barbara
