Method and device for determining a collision speed on the collision of a vehicle

The method (200) involves determining (230) a point in time of a significant signal characteristic of a collision signal representing a signal from a sensor (110) of a vehicle (100). The collision speed is determined (240) using the significant signal characteristic during associated deformation value and period between a collision associated reference time and point in time of significant signal characteristic. Independent claims are included for the following: (1) device for determining collision speed at collision of vehicle; and (2) computer program product for determining collision speed at collision of vehicle.