The Radar and lidar remote sensing is one of several advanced driver assistance systems (ADAS) used to enhance and automate vehicle systems for better driving and safety. Radar uses radio waves to determine the velocity, range, and angle of objects, while Lidar uses a laser. Both technologies provide early detection of potentially hazardous situations. Unlike camera systems, radar and lidar systems can see through fog and snow, and are unaffected by dirt or dark environments. Autonomous vehicles typically use radar and lidar as a critical component of their obstacle detection and avoidance systems.