Abstract: An apparatus and method for limiting a vehicle speed based on voice inputs includes a sound recorder that receives a voice input. A first signal generator receives a vehicle speed sensor value, and outputs a vehicle speed signal. A signal memory receives the signals provided by the sound recorder and the first signal generator, and stores them as a pair of values upon receiving a store signal from a memory key. A first comparator compares the stored voice signal with a current voice signal output by the sound recorder, compares them, and outputs a coincidence signal based on the comparison. A second comparator compares the stored speed signal and a current speed signal received provided by the first signal generator, compares them, and outputs a difference signal. Based on the coincidence signal and the difference signal, the vehicle's speed is regulated so as not to exceed the stored speed signal.