My 2014 truck has solid axels and body on frame, but the suspension is a million times better than the 70's International truck I was in when I hit my head on t

My 2014 truck has solid axels and body on frame, but the suspension is a million times better than the 70's International truck I was in when I hit my head on the ceiling as it went over a speed bump at a reasonable speed. Coils on all four corners and I'm sure some better engineering helps quite a bit.