Abstract: There is provided a motorcycle-drive assistance apparatus that makes rapid deceleration by an engine brake possible so that braking control unintended by a rider can be avoided. The motorcycle-drive assistance apparatus is configured in such a way that a deceleration-start inter-vehicle distance calculation unit calculates a deceleration-start inter-vehicle distance, by use of an acceleration value read from an engine-brake acceleration value storage unit, based on an own-vehicle speed calculated by an own-vehicle speed calculation unit and a road-surface gradient angle calculated by a road-surface gradient angle calculation unit and in such a way that when the inter-vehicle distance between an own vehicle and another vehicle, detected by an object detection unit, becomes smaller than the calculated deceleration-start inter-vehicle distance, deceleration of the own vehicle through the engine brake is started.

Abstract: Provided is a control system including a control server, an on-vehicle device mounted to a vehicle, and a device to be controlled by a device control signal. The on-vehicle device includes: a vehicle information acquisition unit for acquiring vehicle information including a vehicle ID, and vehicle position information; and a server communication unit for transmitting the vehicle information and the vehicle position information to the control server. The control server includes a communication area determination unit: which determines a vehicle for which the vehicle ID matches a registration vehicle ID, to be a registration vehicle; which generates a device control signal on the basis of device setting information and a device control area determination result being a result of determination as to whether or not the registration vehicle is inside the device control area; and which outputs the device control signal to the device.

Abstract: There is provided a motorcycle-drive assistance apparatus that makes rapid deceleration by an engine brake possible so that braking control unintended by a rider can be avoided. The motorcycle-drive assistance apparatus is configured in such a way that a deceleration-start inter-vehicle distance calculation unit calculates a deceleration-start inter-vehicle distance, by use of an acceleration value read from an engine-brake acceleration value storage unit, based on an own-vehicle speed calculated by an own-vehicle speed calculation unit and a road-surface gradient angle calculated by a road-surface gradient angle calculation unit and in such a way that when the inter-vehicle distance between an own vehicle and another vehicle, detected by an object detection unit, becomes smaller than the calculated deceleration-start inter-vehicle distance, deceleration of the own vehicle through the engine brake is started.