Self driving cars function using a combination of software, radar, lasers, sensors, maps, and cameras among other things to properly function. Software processes all of these inputs and ultimately sends instructions to the vehicles accelerators, brakes, and steering mechanisms. These are called the actuators of the vehicle.
Self Driving Trucks are already making deliveries for the US Postal Service. Many auto manufacturers such as Tesla and Ford have very big plans for self driving vehicles. Here is a thorough analysis of the plans Ford has for this emerging marketplace.
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