Using a lidar and camera, Toyota's Safety Sense C package will provide Self-dimming high beams for headlights Lane-departure warning Collision-avoidance braking up to 50 mph Lidar, a kind of radar based on laser beams instead of radio waves, is moving closer to becoming a mass-market safety technology. Two suppliers have announced plans to launch mass production of lidar systems for automakers, a sign that the technology is compact and cheap enough for widespread use.