How do autonomous vehicles navigate and avoid obstacles?
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Autonomous vehicles are designed to sense their surroundings with techniques such as RADAR, LIDAR, GPS and computer vision. This array of sensors working coherently to observe and record the surroundings constitute the perception module of the vehicle.
Radar sensors monitor the position of nearby vehicles. Video cameras detect traffic lights, read road signs, track other vehicles, and look for pedestrians. Lidar (light detection and ranging) sensors bounce pulses of light off the car’s surroundings to measure distances, detect road edges, and identify lane markings.