It is estimated that around a quarter of all accidents involve multiple collisions. Secondary collisions can be especially injurious as many of the protection systems, such as airbags and pre-tensioners, have already been deployed in the primary collision and are unable to provide further benefit. Moreover, the vehicle structure may be compromised from the initial impact and less able to absorb the energy of secondary collisions. Multi Collision Brake reduces the likelihood of such secondary impacts, and makes those that happen less severe. It is estimated that, if all cars were equipped with a system like Multi Collision Brake, around 8 percent of fatalities and 4 percent of serious injuries could be addressed each year.