A park brake system for adjusting a tension in a brake cable that is coupled to a park brake. The park brake system can include a driver that is communicatively coupled to a microcontroller, and an actuator that is rotatably displaceable by operation of the driver. An equalizer assembly can be linearly displaced along the rotating actuator to adjust a tension in the brake cable. The microcontroller can monitor a current being drawn by the driver as the driver is operated, and generate instructions to cease operation of the driver upon the current reaching a predetermined current threshold that corresponds a maximum force that is to be applied by the park brake. The microcontroller can also, when the park brake is being released from a set position, count pulses outputted by an encoder in connection with determining whether the park brake has reached a running clearance position.

A park brake system for adjusting a tension in a brake cable that is coupled to a park brake. The park brake system can include a driver that is communicatively coupled to a microcontroller, and an actuator that is rotatably displaceable by operation of the driver. An equalizer assembly can be linearly displaced along the rotating actuator to adjust a tension in the brake cable. The microcontroller can monitor a current being drawn by the driver as the driver is operated, and generate instructions to cease operation of the driver upon the current reaching a predetermined current threshold that corresponds a maximum force that is to be applied by the park brake. The microcontroller can also, when the park brake is being released from a set position, count pulses outputted by an encoder in connection with determining whether the park brake has reached a running clearance position.

A vehicle comprises a control system. The control system is connectable to a trailer and includes a trailer connection checking mode in which the control system actuates trailer lights of the trailer in a predetermined sequence. The control system makes a trailer presence determination of whether the trailer is connected to the control system. According to the trailer presence determination, the control system performs the trailer connection checking mode.

A vehicle comprises a control system. The control system is connectable to a trailer and includes a trailer connection checking mode in which the control system actuates trailer lights of the trailer in a predetermined sequence. The control system makes a trailer presence determination of whether the trailer is connected to the control system. According to the trailer presence determination, the control system performs the trailer connection checking mode.

A linkage assembly couples a plunger of a brake valve to a manually operated brake input member. The linkage assembly includes a pushrod and a resilient member. The pushrod has an end member which is engagable with the plunger. The resilient member is attached to the pushrod end member. The resilient member has an end which is engagable with the plunger when the pushrod end member is spaced apart from the plunger. The resilient member deforms to allow the pushrod end member to directly engage the plunger when the pushrod end member is moved towards the plunger. One of the end and resilient members surrounds a portion of the other of the end and resilient members. The resilient member may be a sleeve which surrounds an end portion of the pushrod. Or, the resilient member may be surrounded by a hollow end portion of the pushrod.

A vehicle pedal device including a transmission member that transmits an operation force applied to a pedal, a reaction force lever that is disposed on the transmission member so that the reaction force lever pivot about a predetermined axis, and that outputs the operation force transmitted to the transmission member to a brake device against a biasing force of a load spring, and a depressing force detector that is fixedly attached to a pedal arm of the pedal or to a sub lever coupled to the pedal arm and that receives a reaction force of the reaction force lever to detect the operation force applied to the pedal, the depressing force detector being configured to have a positioning pin projecting from the depressing force detector. the pedal arm of the pedal or the sub lever coupled to the pedal arm being configured to have a positioning pin insertion hole in which the positioning pin of the depressing force detector is inserted. the depressing force detector being configured to be fixed to the pedal arm or the sub lever with the positioning pin being pressed against an inner peripheral edge of the positioning pin insertion hole by a reaction force of the load spring, and the load spring being fixedly positioned between the reaction force lever and the depressing force detector.

A control device for an electric parking brake controls a motor for driving a friction member of the electric parking brake. The control device includes a processing unit which starts the motor in order to drive the friction member to a direction for placing the electric parking brake in a locked state; measures a current value of the motor in an operating state thereof; determines a cut-off current value from the measured current value of the motor according to a predetermined rule defining a correlation between the cut-off current value of the motor, by which a braking force necessary for the electric parking brake in the locked state is generated, and an increasing rate of the current; and stops the motor when the current value of the motor reaches the determined cut-off current value.

A control device for an electric parking brake controls a motor for driving a friction member of the electric parking brake. The control device includes a processing unit which starts the motor in order to drive the friction member to a direction for placing the electric parking brake in a locked state; measures a current value of the motor in an operating state thereof; determines a cut-off current value from the measured current value of the motor according to a predetermined rule defining a correlation between the cut-off current value of the motor, by which a braking force necessary for the electric parking brake in the locked state is generated, and an increasing rate of the current; and stops the motor when the current value of the motor reaches the determined cut-off current value.

A pedal operation amount display apparatus includes: a display device that is configured to display an accelerator operation amount of an accelerator pedal by an operating person by means of light emission of segments; and an assist reaction force calculation part that is configured to set a threshold operation amount as a target value of the accelerator operation amount; and a display control part that is configured to control the display device in a manner such that the accelerator operation amount corresponding to the threshold operation amount is constantly displayed by means of light emission of the segments. Even when the threshold operation amount is changed, the display control part keeps the light emission of the segments unchanged until the accelerator operation amount varies.

A pedal operation amount display apparatus includes: a display device that is configured to display an accelerator operation amount of an accelerator pedal by an operating person by means of light emission of segments; and an assist reaction force calculation part that is configured to set a threshold operation amount as a target value of the accelerator operation amount; and a display control part that is configured to control the display device in a manner such that the accelerator operation amount corresponding to the threshold operation amount is constantly displayed by means of light emission of the segments. Even when the threshold operation amount is changed, the display control part keeps the light emission of the segments unchanged until the accelerator operation amount varies.