I was a cop for several years. I worked hundreds of crashes, and a few fatalities. If cars had a max speed limit of 85 mph, and required the seatbelt to be engaged to work, we'd cut our fatality rate in half. Most nations' DUI laws consider a 0.05 BAC as illegal. In most US states 0.08 is presumed under the influence, 0.06 - 0.079 is considered no presumption either way, and under .06 is considered not under the infl…
P.S. Growing up, my dad had the dealer install seatbelts in the family wagon before he picked it up. We never moved an inch unless everyone was buckled up. Nobody else, and I mean nobody else, had seatbelts in their car at the time.
P.P.S. Seatbelts also saved my life.