This invention intends to provide a vehicle-mounted driving recorder (1) that can facilitate an after-the-fact analysis on not only situation data at a time of an accident but also situation data at a time of a hiyari hatto (risk incident) and that can contribute accident prevention. The vehicle-mounted driving recorder (1) comprises a data receiving section that receives situation data indicating behavior, a surrounding situation, and an operating situation of a vehicle and a data administration section (804) that classifies the situation data into one of predetermined multiple categories based on contents of the received situation data and stores the classified situation data in a situation data storage section (803) specified in a predetermined area of a memory.
