Crumple zones perform a very specific function in the sequence of airbag deployment (letting the sensors crash and bags deploy before the cabin starts decelerating). The speed window at which they will appreciably reduce the deceleration in the cabin is well below the speeds at which a seat-belted occupant of an airbag equipped vehicle has to worry about serious injury. Crumple zones are undeserving of the worship they get. If you want to worship something worship side curtain airbags. They save a lot more life and injury than crumple zones. Pre-tensioners are also another feature that I'd rather have than a crumple zone. As a general rule, features that directly keep the occupants from hitting things are far more beneficial to outcomes than stuff that acts upon the whole vehicle.Secondly, it is perfectly possible to design cars that do not need tons of invasive repairs from minor fender benders. Revise bumper and front/rear cosmetic design to allow for effective bumpers (see also: the 1980s) and tune crumple zones to need higher forces to deform them so you don't have to potentially replace a whole car over a 10-15mph collision. The tradeoff here is that the speed range at which crumple zones do much would move up which is good for real world performance bad for scoring that perfect five stars in a low speed lab test that actually helps sell cars.
tempestn|3 years ago
throwaway0a5e|3 years ago
Can you please cite where I stated, or hell, I'll settle for strongly implied, "the safety tests are invalid" or that "the engineers designing cars don't know what they're doing".
The person I am replying to made a trite low effort comment. I, without calling them out like they deserved, explained that the situation is more nuanced and their opinion is slightly off mark. You then replied with another trite low effort comment straw-manning me. FFS this is ridiculous.