Speed is a measure of the distance traveled by an object over a period of time. A vehicle’s speed is its speed of travel. This can be measured in miles per hour (mph) or kilometers per hour (kph). The speed of a vehicle is usually controlled by the driver, who can increase or decrease the speed by pressing the accelerator or brake pedal.

A variety of factors, including the engine’s power, the traction of the tires, and the aerodynamics of the vehicle, limit a vehicle’s speed. Moreover, drivers must maintain a safe speed, as driving at excessive speeds can increase the risk of accidents and traffic violations.

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