Anti-skid control system for driven wheels

An anti-skid control system for an automotive vehicle having a pair of driven wheels linked by a differential gear mechanism and a pair of non-driven wheels, comprising:

• wheel brake cylinders operatively connected to said driven wheels and non-driven wheels, respectively, for applying a braking force thereto;
• a hydraulic pressure generator for supplying a hydraulic braking pressure to each of said wheel brake cylinders;
• actuating means disposed between said hydraulic pressure generator and each of said wheel brake cylinders for controlling the hydraulic braking pressure in each of said wheel brake cylinders;
• wheel speed detecting means for detecting a wheel speed of each of said driven wheels and non-driven wheels, and for providing an output signal corresponding to said wheel speed respectively;
• braking force control means for controlling said actuating means in response to said output signal of said wheel speed detecting means to control the braking force applied to at least said driven wheels, said braking force control means including determination means for determining whether a speed differential between the wheel speeds of said driven wheels is greater than a predetermined value when the braking force applied to one of said driven wheels is controlled by said actuating means, and increase restraining means for restraining the hydraulic braking pressure from being supplied to one of said wheel brake cylinders operatively connected to the other one of said driven wheels when said determination means determines that said speed differential is greater than said predetermined value.