An electric travelling vehicle including: a motor controller configured to control an electric motor based on displacement of a steering operation part to a forward travel position, a neutral position, and a rearward travel position, a brake controller configured to bring an electromagnetic power-off brake into a released state or a braking state; and a travel state detector configured to detect a travelling state that is accompanied with the released state, a stopped state that is accompanied with the braking state, and a transit stopped state that is accompanied with the braking state.

An electric travelling vehicle including: a motor controller configured to control an electric motor based on displacement of a steering operation part to a forward travel position, a neutral position, and a rearward travel position, a brake controller configured to bring an electromagnetic power-off brake into a released state or a braking state; and a travel state detector configured to detect a travelling state that is accompanied with the released state, a stopped state that is accompanied with the braking state, and a transit stopped state that is accompanied with the braking state.

A vehicle power supply system that includes an alternator; a first electrical storage device that is charged by the alternator; a power generator that generates power in conjunction with traveling of the vehicle; a second electrical storage device that is charged by the power generator; a charge path used to charge the second electrical storage device with power from the power generator; a first power feed path for feeding power to the actuator from the first electrical storage device; a second power feed path for feeding power to the actuator from the second electrical storage device; a third power feed path for feeding power to the control load from the first electrical storage device; a fourth power feed path for feeding power to the control load from the second electrical storage device; a first switch and a second switch.

A vehicle power supply system that includes an alternator; a first electrical storage device that is charged by the alternator; a power generator that generates power in conjunction with traveling of the vehicle; a second electrical storage device that is charged by the power generator; a charge path used to charge the second electrical storage device with power from the power generator; a first power feed path for feeding power to the actuator from the first electrical storage device; a second power feed path for feeding power to the actuator from the second electrical storage device; a third power feed path for feeding power to the control load from the first electrical storage device; a fourth power feed path for feeding power to the control load from the second electrical storage device; a first switch and a second switch.

A control unit comprises a first power source line connecting a vehicle power source and a motor, a second power source line connecting the vehicle power source and a plurality of electromagnetic valves, a solenoid relay arranged in a second power source line, a link line connecting a portion of the second power source line, which extends between the solenoid relay and the plurality of electromagnetic valves, to the first power source line, and a link relay arranged in the link line.

A system is disclosed for controlling operation of a motor-driven brake boost assist system of a vehicle braking system during a loss of battery power to the brake boost assist system. The system makes use of a brake boost assist system including a motor, an electronic control unit (ECU) for controlling operation of the brake boost assist system, and a detection system. The detection system is responsive to a transition edge of a VBATTERY signal powering the motor. The detection system is configured to generate a wakeup pulse in response to detecting the transition edge. The wakeup pulse is applied to the ECU to wake up the ECU in the event of a momentary power loss to the ECU.

A drive assistance device includes an automatic brake unit configured to perform automatic brake control, a brake hold unit configured to perform a brake hold control keeping the vehicle stopped, a brake hold cancel unit configured to cancel the brake hold control when it is determined that a predetermined cancel condition is satisfied, a surroundings information obtaining unit configured to obtain surroundings information indicating a situation around the vehicle, a maneuver information obtaining unit configured to obtain maneuver information about a driving maneuver performed by a driver of the vehicle, a maneuver determination unit configured to determine, based on the surroundings information and the maneuver information whether the driving maneuver performed during the brake hold control is appropriate for the situation around the vehicle, and a prohibition unit configured to prohibit cancelling the brake hold control as long as it is determined that the driving maneuver is inappropriate.

A drive assistance device includes an automatic brake unit configured to perform automatic brake control, a brake hold unit configured to perform a brake hold control keeping the vehicle stopped, a brake hold cancel unit configured to cancel the brake hold control when it is determined that a predetermined cancel condition is satisfied, a surroundings information obtaining unit configured to obtain surroundings information indicating a situation around the vehicle, a maneuver information obtaining unit configured to obtain maneuver information about a driving maneuver performed by a driver of the vehicle, a maneuver determination unit configured to determine, based on the surroundings information and the maneuver information whether the driving maneuver performed during the brake hold control is appropriate for the situation around the vehicle, and a prohibition unit configured to prohibit cancelling the brake hold control as long as it is determined that the driving maneuver is inappropriate.

Systems and methods for braking a vehicle. The method includes receiving, with an electronic controller, a signal from a mode activation mechanism indicating the vehicle is in a first mode and receiving, with the electronic controller, a signal from an input mechanism. If the vehicle is in the first mode and an operator of the vehicle actuates the input mechanism, the electronic controller sends a signal to a brake of the vehicle to lock up a wheel of the vehicle.

Systems and methods for braking a vehicle. The method includes receiving, with an electronic controller, a signal from a mode activation mechanism indicating the vehicle is in a first mode and receiving, with the electronic controller, a signal from an input mechanism. If the vehicle is in the first mode and an operator of the vehicle actuates the input mechanism, the electronic controller sends a signal to a brake of the vehicle to lock up a wheel of the vehicle.