In 2005, and as part of a larger programme, a co-linear crash
test was performed by the authors where the front of a Vauxhall
Omega saloon motorcar containing two adult male volunteers
collided with the rear of a Toyota Celica coupe motorcar, also containing
two adult male volunteers. Accelerometers in the Toyota
recorded a speed change of 5.97 mph.
For the driver of the target vehicle the peak head acceleration
(backwards/forwards) was 8.3g. and the peak chest acceleration
(backwards/forwards) was 4.7g. This provided a positive disparity
of 3.6g.