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
Education in Czechoslovakia country's growing industrial labor force. Some disparities remained, however. Germans and Czechs predominated disproportionately in secondary schools and universities. Both in the Czech lands and in Slovakia, compulsory education, had begun in 1774, on the initiative of Maria Theresa. In the Czech lands, prosperous farmers and even cottagers and tenants had a long history of boarding their children in towns or cities for secondary, vocational, and higher education. Despite regional and ethnic imbalances, Czechoslovakia entered the Communist era with a literate, even highly educated, populace. Education under Communist Party of Czechoslovakia (KSC) rule has a history of periodic reforms (often