According to the nhtsa, the combination of and reduce the risk of serious crash-related head injury by 83 percent.

Seat belts

air bags

child safety seats

Motorcycle helmets etc

Explanation:

we know according to the ( NHTSA ) National Highway Traffic Safety Administration

the combination of Seat belts and air bags and child safety seats and Motorcycle helmets  

these are some factor that if we use them properly

so according to NHTSA study 2017 seat belt alone reduce 45 % injury who are occupy front seat in car

the period of human evolution has coincided with environmental change, including ('hominin' refers to any bipedal species closely related to humans – that is, on how do we know earth's climate has changed? a map showing dates and locations of prehistoric archeological sites and migration routes from africa into.