Abstract
Researchers at the University of Central Florida and the Central Florida Expressway Authority (CFX) have patented methods for systems that help prevent head-on collisions when drivers wrongfully enter roadways. The technologies (UCF IDs: 33441, 33714, and 33716) can be used to alert and stop wrong-way drivers (WWDs) and to also notify right-way drivers, authorities and police of possible oncoming danger. Employing unique Rectangular Flashing Beacon (RFB) signs, motion sensors, controllers, wireless communication devices and navigation servers, the technologies integrate with existing transportation infrastructures and driver assistance technologies in cars (called "connected vehicles").
Technical Details
The wrong-way detection, alert and countermeasure systems can comprise one or more RFB warning stations for various roadways, such as exit ramps of limited access highways (toll roads and turnpikes) and high-speed roads. Each exit ramp has at least two warning stations that include "Wrong Way" signs with two sets of flashing beacons, front and rear facing sensors and cameras, a communications device, and a controller.
When movement sensors detect a WWD entering an off ramp, the flashing beacons activate, and a camera takes a confirmation photo of the scene sending an alert and image to the transportation management center (TMC). If the rear-facing movement sensors installed on the signs detect that the vehicle has passed the warning station, then another camera takes a confirmation photo. At many exit ramps, a third camera is installed to verify whether the WWD self-corrects before entering the mainline, thus enabling operators to determine if law enforcement is needed at the site (which saves time and allows them to address other more critical needs). The system also notifies the local highway traffic operations center (such us a public transportation authority or law enforcement).
Benefit
Attracts the attention of wrong-way drivers much better than existing light emitting diodes (LEDs)Data collected for over 3 years at Florida exit ramps where technologies are deployed shows that more than 80 percent of wrong way drivers at exit ramps have safely self-corrected without incidentEffectively prevents catastrophic injuries and fatalitiesMarket Application
Exit ramps of limited access highways (toll roads and freeways)Any public or private high-speed roadways where wrong-way driving may occur
Brochure
