Collision type identifying device

A collision type identifying device is disposed in a central portion of a vehicle main body and has first deceleration detecting means (22), peak time detecting means (32), required time detecting means (34), and type identifying means (36). The deceleration detecting means (22) detects a vehicle deceleration in the longitudinal direction. The peak time detecting means (32) detects, as a first peak time (tp), a time from the excess of a preset threshold (GTH) by a waveform of the vehicle deceleration (G) detected by the deceleration detecting means (22) to a first peak. The required time detecting means (34) detects, as a required time (tn), a time when an integrated deceleration (VG) obtained through time quadrature of the vehicle deceleration (G) becomes equal to a predetermined integrated value set in advance. The type identifying means (36; 78) identifies a vehicle collision type on the basis of the first peak time (tp) and the required time (tn). The collision type identifying device can identify a vehicle collision as one of a plurality of collision types at once.