Blind Spot Detection

Hover to enlarge

  • 3 images show a red car approaching the blind spot on the left of a black car on a multi-lane highway.  As the red vehicle approaches, the warning light is activated on the driver’s side mirror of the black car.  If the black car signals to change lanes into the approaching red car, a warning sound is also made.

iso symbol for Blind Spot DetectionBlind Spot Detection systems warn a driver that a vehicle is in his or her blind spot –areas to the side and rear of the vehicle outside the driver’s view. Sensors (camera, ultrasonic, or radar) monitor the sides and rear of the vehicle for vehicles (including motorcycles) approaching from behind and alert the driver with lights mounted in either the side-view or rear-view mirrors, or the door. If you switch on a turn signal showing intent to make a lane change, and a vehicle is present in the blind spot, the system may warn you with red or yellow flashing icons and/or audio alerts, or by vibrating the steering wheel or the driver’s seat.


  • The system’s monitoring range differs by make.
  • Most systems only warn if you switch on the turn signal.

Things to keep in mind

  • These systems are designed to aid in the driving task. They are not intended to replace the driver’s attention and judgement.
  • Do not rely solely on the system. Always be vigilant when driving.
  • Drivers are encouraged to read the owner’s manual to become familiar with the system and the conditions when system operation is different or is not guaranteed.

Learn more

Date modified: