A retrofit pneumatic circuit complements an existing factory braking system to preserve the original function of the driver's foot pedal while also adding the ability for a computer to actuate the brakes separately and independently. In the event where both the primary and secondary drivers are actuating the brakes at any time, the braking force applied is the maximum of the two. In the preferred approach, a shuttle valve is connected between a primary proportional valve and a copy of that proportional valve. Directional control valves are also included to isolate both the input and the output portions of the secondary circuit in order to enforce positive shutdown of computer control. One directional valve blocks a supply pressure to prevent bleeding of the system in any situation where pressure is requested when computer control is supposed to be disabled. A second directional valve vents any built-up pressure to the atmosphere, so that any residual pressure does not actuate the brakes after computer control is disabled.

Aspects hereof relate to a stand-on terrain working vehicle having a foot-operated parking brake system. The parking brake system includes a pedal assembly having a first pedal and a second pedal, an actuator coupled to the pedal assembly, a brake configured to be actuated between a set/engaged state and a released/disengaged state, and an over-center linkage. When the first pedal of the pedal assembly is depressed, the brake is actuated to the set/engaged state, and when the second pedal of the pedal assembly is depressed, the brake is actuated to the released/disengaged state. The over-center linkage is configured to bias the brake towards one of the set/engaged state and the released/disengaged state.

Aspects hereof relate to a stand-on terrain working vehicle having a foot-operated parking brake system. The parking brake system includes a pedal assembly having a first pedal and a second pedal, an actuator coupled to the pedal assembly, a brake configured to be actuated between a set/engaged state and a released/disengaged state, and an over-center linkage. When the first pedal of the pedal assembly is depressed, the brake is actuated to the set/engaged state, and when the second pedal of the pedal assembly is depressed, the brake is actuated to the released/disengaged state. The over-center linkage is configured to bias the brake towards one of the set/engaged state and the released/disengaged state.

A brake pedal assembly comprising a pedal and a pedal resistance force member operably coupled to the pedal. A damper pedal resistance force module defines an interior fluid-filled cavity. A shaft extends through the damper module and includes a piston mounted thereon and moveable through the fluid-filled cavity to generate a damper resistance force. A spring pedal resistance force module is adapted to generate a spring pedal resistance force. A pedal force sensing module is mounted to the pedal resistance force member. A pedal position sensor is mounted to the pedal resistance force member. A pedal force sensor is mounted to the pedal resistance force member.

A brake pedal assembly comprising a pedal and a pedal resistance force member operably coupled to the pedal. A damper pedal resistance force module defines an interior fluid-filled cavity. A shaft extends through the damper module and includes a piston mounted thereon and moveable through the fluid-filled cavity to generate a damper resistance force. A spring pedal resistance force module is adapted to generate a spring pedal resistance force. A pedal force sensing module is mounted to the pedal resistance force member. A pedal position sensor is mounted to the pedal resistance force member. A pedal force sensor is mounted to the pedal resistance force member.

A force input member for a brake actuating device of a vehicle brake system includes at least one first portion connected to the brake actuating device; at least one second portion connected to a brake pedal; and at least one coupling device. The at least one coupling device couples the first portion and the second portion to one another wherein the at least one coupling device is designed to permit a relative movement between the first portion and the second portion in the case of a force acting on the force input element which is greater than or equal to a predetermined release force.

The present disclosure relates to a foldable pedal apparatus for a vehicle, and is configured so that in an autonomous traveling situation, an accelerator pedal apparatus and a brake pedal apparatus are slid and moved to the left and the right of a dash panel and hidden, respectively, and therefore, in hidden states of being inoperable by a driver, and in a manual driving mode, the accelerator pedal apparatus and the brake pedal apparatus are slid and moved to be gathered to the center of the dash panel and exposed, respectively, and therefore, in popped-up states of being operable by the driver.

A foldable pedal apparatus for vehicles is provided in which pedal pads are rotated rearwards from a footrest panel and thus enter a pop-up state to be manipulable by a driver in a manual driving mode in which the driver directly drives a vehicle. The pedal pads are rotated forwards maximally close to the front surface of the footrest panel and thus enter a hidden state without exposure to be nonmanipulable by the driver in an autonomous driving situation.

A foldable pedal apparatus for a vehicle includes a misoperation prevention pad, an accelerator pedal pad and a brake pedal pad. In a manual driving mode in which a driver directly drives, the accelerator pedal pad and the brake pedal pad protrude and are exposed toward the driver and then enter into a popped-up state so that operation of the pedal pads by the driver may be performed. In an autonomous driving situation, the accelerator pedal pad and the brake pedal pad are hidden and then enter into a hidden state in which exposure toward the driver is blocked so that the operation of the accelerator pedal pad and the brake pedal pad by the driver is unable to be performed. Furthermore, the misoperation prevention pad is provided between the accelerator pedal pad and the brake pedal pad.

A foldable pedal apparatus for a vehicle includes a misoperation prevention pad, an accelerator pedal pad and a brake pedal pad. In a manual driving mode in which a driver directly drives, the accelerator pedal pad and the brake pedal pad protrude and are exposed toward the driver and then enter into a popped-up state so that operation of the pedal pads by the driver may be performed. In an autonomous driving situation, the accelerator pedal pad and the brake pedal pad are hidden and then enter into a hidden state in which exposure toward the driver is blocked so that the operation of the accelerator pedal pad and the brake pedal pad by the driver is unable to be performed. Furthermore, the misoperation prevention pad is provided between the accelerator pedal pad and the brake pedal pad.