To provide a vehicle accident analyzing apparatus in which reconstruction
quality of low speed crashes is improved. An impact parameter
determination apparatus 10 is provided with a triggering unit 20 which
uses input signals from in-vehicle sensors, and an area determination
unit 30, and a parameter calculation unit 50. The triggering unit 20
generates a trigger signal 21 based on the input signals for triggering
the area determination unit 30 and the parameter calculation unit 50. The
area determination unit 30 uses the input signals to calculate the most
probable impact area 31. The parameter calculation unit 50 calculates the
final desired crash parameters based on the input signals and the most
probable impact area 31.