A vehicle alert system (100) alerts a driver of a vehicle about objects within a predetermined distance from the vehicle. The vehicle alert system (100) has at least two sensors (102) that detect objects within a predetermined distance of the sensor using light and changes in light. When an object is...http://www.google.fr/patents/US6803858?utm_source=gb-gplus-shareBrevet US6803858 - Blind spot alert system
