Service Brake Assist Steering

A brake assist system for assisting the steering operations of a mobile vehicle, the brake assist system comprising:

• a service brake assembly comprising a first brake device and a second brake device;
• an auxiliary control assembly coupled to the service brake assembly, the auxiliary control assembly comprising a main valve circuit and a secondary valve circuit fluidly coupled to an auxiliary supply source;
• and
• an electronic control unit communicatively coupled to the auxiliary control assembly, wherein the electronic control unit is configured to receive an input signal indicative of a vehicle operating parameter comprising at least one of a steering angle generated by a vehicle guidance system or a vehicle speed error, and generate a control signal to activate the main and secondary valve circuits, wherein activation of the main and secondary valve circuits comprises proportionally controlling an output of at least two control valves arranged in the main and secondary valve circuits to supply a pressurized flow of fluid to at least one of the first or second brake devices to assist steering operations of the vehicle.