A hydraulic control system, comprising: a closed loop hydraulic circuit including at least one hydraulic motor and a plurality of variable displacement pumps (140A, 140B) fluidly connected in parallel in the closed loop hydraulic circuit, the plurality of variable displacement pumps (140A, 140B) being configured to supply the at least one hydraulic motor with pressurized hydraulic fluid; a plurality of hydraulic actuators (142A, 142B), each of the plurality of hydraulic actuators being associated with one of the plurality of variable displacement pumps (140A, 140B) and configured to adjust the displacement of the associated variable displacement pump (140A, 140B); a pilot valve assembly configured to supply each of the plurality of hydraulic actuators (142A, 142B) with hydraulic fluid having a pilot pressure corresponding to a desired displacement of each of the plurality of variable displacement pumps (140A, 140B), the pilot valve assembly including a first pilot valve configured to supply the pressurized fluid having the pilot pressure to a first input of each of the plurality of hydraulic actuators (142A, 142B) via a first hydraulic line and a second pilot valve configured to supply the pressurized fluid having the pilot pressure to a second input of each of the plurality of hydraulic actuators (142A, 142B) via a second hydraulic line; and a pressure regulating device configured to limit the pilot pressure of the hydraulic fluid supplied to the plurality of hydraulic actuators (142A, 142B) when a working pressure of hydraulic fluid in the closed loop hydraulic circuit reaches a maximum allowable working pressure. a closed loop hydraulic circuit including at least one hydraulic motor and a plurality of variable displacement pumps (140A, 140B) fluidly connected in parallel in the closed loop hydraulic circuit, the plurality of variable displacement pumps (140A, 140B) being configured to supply the at least one hydraulic motor with pressurized hydraulic fluid; a plurality of hydraulic actuators (142A, 142B), each of the plurality of hydraulic actuators being associated with one of the plurality of variable displacement pumps (140A, 140B) and configured to adjust the displacement of the associated variable displacement pump (140A, 140B); a pilot valve assembly configured to supply each of the plurality of hydraulic actuators (142A, 142B) with hydraulic fluid having a pilot pressure corresponding to a desired displacement of each of the plurality of variable displacement pumps (140A, 140B), the pilot valve assembly including a first pilot valve configured to supply the pressurized fluid having the pilot pressure to a first input of each of the plurality of hydraulic actuators (142A, 142B) via a first hydraulic line and a second pilot valve configured to supply the pressurized fluid having the pilot pressure to a second input of each of the plurality of hydraulic actuators (142A, 142B) via a second hydraulic line; and a pressure regulating device configured to limit the pilot pressure of the hydraulic fluid supplied to the plurality of hydraulic actuators (142A, 142B) when a working pressure of hydraulic fluid in the closed loop hydraulic circuit reaches a maximum allowable working pressure.