Abstract: A wheel speed measuring circuit includes a counter controlled by a wheel speed signal having a frequency proportional to the rotational speed of the wheel sensed by a wheel speed sensor associated with a wheel; a comparator for comparing the digital output of the counter with a predetermined digital value; a wheel speed generating circuit for generating a digital output corresponding to the rotational speed of the wheel on the basis of the output of the comparator; and a pulse generator for generating pulses of a frequency proportional to the digital output of the wheel speed generating circuit, the pulse generator receiving the digital output of the wheel speed generating circuit, wherein the counter receives the output pulses of the pulse generator to count the output pulses thereof for the period of the wheel speed signal or for a time interval relating to the period of the wheel speed signal, and the digital output of the counter is compared with the predetermined digital value in the comparator.