Provided is a vehicle data recording device in which detection values of
an acceleration sensor 210 and an driving status detecting sensor 220 are
periodically and continuously recorded in a ring buffer 120, a detection
value which has already been recorded in the ring buffer 120 is recorded
in a specific recording area of a recorder 130 before a new detection
value is recorded in the ring buffer 120 when a recording condition is
satisfied, while the new detection value is periodically recorded in
another recording area of the recorder 130, and recording is performed by
the recorder 130 until all detection values which have already been
recorded in the ring buffer 120 when the recording condition is satisfied
are entirely recorded in a specific recording area of the recorder 130.