What Is Drive-By-Wire Technology?

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What Is Drive-By-Wire Technology?

There are three main driving components that drive-by-wire systems typically replace with electronic controls: throttle, brakes, and steering. These systems are typically referred to as electronic throttle control, brake-by-wire, and steer-by-wire.​

The most common form of drive-by-wire technology and the easiest to find is electronic throttle control. Unlike traditional throttle controls that couple the gas pedal and throttle with a mechanical cable, these systems use a series of electronic sensors and actuators.

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Vehicles with computerized fuel controls have used throttle sensors for decades. These sensors tell the computer the position of the throttle, but the throttle is still activated by a physical cable. In vehicles that use true electronic throttle control (ETC), there is no physical connection between the gas pedal and the throttle. Instead, the gas pedal sends a signal that causes an electromechanical actuator to open the throttle.

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