Seat belt that required a particular technical approach would rapidly become dated as motor manufacturers would tool up for a particular standard which could not easily be changed. For example, in 1969 there were competing designs for lap and three-point seat belts, rapidly tilting seats, and airbags being developed. But as countries started to mandate seat belt restraints the global auto industry invested in the tooling and standardized exclusively on seat belts, and ignored other restraint designs such as air bags for several decades As of 2016, seat belt laws can be divided into two categories: primary and secondary. A primary seat
Transport Act 1981 or their agents, thus making its privatisation possible. It had been compulsory to fit front seat belts to cars built in Europe since 1965 and to all new cars sold in the UK since 1967. The Clunk Click" TV commercials, starring Jimmy Savile showing the dangers of being thrown through the windscreen in a collision was shown during the 1970s. Attempts were made to making the wearing of front seat belts compulsory into a Road Traffic Bill in 1973-4 but was unsuccessful. John Gilbert, the Minister of Transport proposed a 'Road Traffic (Seat Belts) Bill' in 1976 but it was