They was first intrduced in 1959.
But by no means into the design of all cars at that date.
All your Newer car have crumple zones
crumple zones absorb impact damage to protect the passenger cell
Crumple Zones prevent damage or injury by supplying a place in the structure of the frame to crumple in an accident.
Antionne Frederique Von Krummpellzoner
Crumple zones are zones built into cars that crumple in a controlled manner. The main crumple zones are at the front and the rear of a vehicle. On impact, they crumple up in a controlled manner, which stops the force energy reaching the occupants and injuring them. The crumple zone dissipates the energy Advantage :they save lives by stopping forceful energy Disadvantage: they can kill occupants in severe accidents because in high speed impacts they can dislodge the dashboard from the frame of the body Potential collapse of the footwells, trapping the driver and passenger Crumple zones can be recognised by bent body panels.
You would have to crash to use them.
1951 by mercedes benz
The crumple zones of cars are normally at the front because it is estimated that 65% of the car impacts occur on the front side. The crumple zone is aimed at absorbing the impact of a crush to secure the passengers.
By absorbing some of the energy.
seat belts and air bags