Abstract: An antiskid control system is disclosed which controls a brake pressure applied to a wheel brake, using the rotational speed Va of a wheel, a reference speed Vs which is calculated on the basis of the speed Va, and an acceleration/deceleration Dv of the wheel which represents a rate of change in the speed Va, as a brake pedal is depressed. After a decompressing/intensifying cycle of the brake pressure applied to the wheel brake is repeated a given number of times within a short time internal of a given length, a "hard" condition is established in the shock absorber. When the brake pedal is released, the "hard" condition of the shock absorber is terminated. The control system includes a solenoid valve which is used to intensity, hold or decompress the wheel brake pressure.