Braking Bar Collision Alert System

WARNS THE DRIVER BEHIND YOU WHEN YOU STOP. HELPS PREVENT REAR-END COLLISIONS. One in three accidents are rear-end collisions. The Braking Bar Collision Alert System illuminates and flashes whenever you brake hard to instantly warn drivers behind you. This innovative device uses motion-sensing technology that checks for braking 200 times per second. If it detects urgent braking (over 30 MPH), it lights up to warn other drivers. No wiring is needed Simply mount the bar to your rear window with adhesive backing.