DRIVING ASSISTANCE UNIT, DRIVING ASSISTANCE APPARATUS, SENSOR UNIT, AND PORTABLE TERMINAL

摘要

A driving assistance unit (1) pertaining to an embodiment of the present invention, wherein a transmission request unit (371) in a portable terminal (3) issues a transmission request to a sensor unit (2) when an assistance timing determination unit (370) determines that a determination by an assistance determination unit (374) is necessary. Only when a transmission request is received, the sensor unit (2) transmits to the portable terminal (3) a detection value of an acceleration sensor (21) for detecting an acceleration occurring as a result of operation of a turn signal lever (5). In the portable terminal (3), the assistance determination unit (374) determines whether to execute driving assistance on the basis of the operation state of the turn signal lever (5) as specified by an operation state specifying unit (366) from the detection value transmitted from the sensor unit (2).