In frontal and rear collision events, the record time varies depen ding on the period during which a longitudinal cumulative delta-V of over 0.8 km/h(0. 5 mph)is reached, and time series data is recorded for up to 250 ms. The record time described above is indicated as "Leng th of delta-V","Delta-V, Longitudinal“outside the record time is indicated by area shaded in the table and not indicated in the graph.