Well, when I said safety, I wasn't thinking of crumple zones or Ralph Nader stuff, but just thinking about how they did it in North Carolina. The smog testing shop also checked brakes, horn, lights, turn signals, tire tread, windshield, etc. And if your car, like my first two, were too old to have smog stuff, they still checked all the other things, gave you a different color windshield sticker, and they charged less for the inspection.
Here they don't do any of that, as long as the car passes the sniffer test. No windshield stickers. Bald tires, no horn, busted-out brake lights, muffler dragging the ground, rust holes everywhere, no mirrors, and a cracked windshield? No problem!
Edited to add - they even checked headlight alignment in NC, and as I recall, charged a fortune to adjust it, even on older cars with exposed screw heads on the bottom and side for easy adjustment. I never had that problem, but it would come up in conversation. I'm thinking of a friend with a lifted 4x4 truck that had headaches getting his aligned by aiming them against his carport wall, and the guys at the inspection shop wanted [insert ludicrous amount here] to adjust them for him.