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Yes, studies seem to indicate so:

https://www.nhtsa.gov/parts-partnership-for-analytics-resear...

https://www.iihs.org/topics/bibliography/ref/2143

Of course the systems are complex and make the car more expensive to repair, but that’s another topic.

Yes, studies have been extensive and based on real world reported accidents.

Newer cars also use more lightweight materials in pursuit of fuel efficiency. My 15 year old Volvo, on the other hand, is quite a bit heavier. That helps if you get hit, but of course makes it more difficult to maneuver out of a tricky situation if the need arises.

If lightweight is the answer, then let's go for motorcycles! :)

Yeah, when the two collide a tank trumps a racecar any day!