Early 1990s: Vorad collision warning system

March 17, 2011  | by: John Baxter

The Vorad collision warning system was designed to alert an inattentive driver or one blinded by fog of a slow moving object ahead. Vorad receives a vehicle speed signal from the tractor’s speed sensor. It uses Doppler radar to detect vehicles ahead in the same lane, as well as reading the difference between the speeds of the two vehicles. Its processor relates the speed difference and vehicle speed so as to warn a driver with both colored lights and beep tones when he needs to brake to avoid danger. Later versions incorporate “active cruise,” an adjustment in the cruise control setting based on closing speed.

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