"Click It or Ticket" is working here in Washington.
There will always be those people that just won't buckle up for any reason and those just to complacent to think that that little trip could be their last. Can't legislate away stupidity I always say. Case in point just recently three local teens ran off the road and hit a tree. The two buckled kids in the front seat survived the accident, but the unbuckled teenage girl in the back was thrown from the vehicle and killed.
Any primary seatbelt law will be abused. As an example, I was driving along and had just answered my cellphone (which in my state is legal to operate while driving) when I passed a statetrooper in the median. He pulled me over and told me I was talking on my cellphone and not wearing my seatbelt. I always wear my seatbelt. I was sitting there with it on too. Deputy Fife just didn't like the fact that I ignored him as I drove by talking on my phone and he pulled me over for that reason. The primary seatbelt law gave him the right to pull me over give me a ticket for a seatbelt violation when it was in reality a ticket for talking on my cellphone, which is again, legal. So there you go, an officer using the law for his own pet peeves. Next they'll be after the fat people, and users of salt.