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
Czechoslovakia at the 1920 Summer Olympics four, finishing 34th individually. Nine fencers represented Czechoslovakia in 1920. It was the nation's debut in the sport. The country had two individual fencers reach semifinals, but neither advanced to a final. The nation's teams were unsuccessful in team competitions, unable to win a single bout. Czechoslovakia competed in the Olympic football tournament for the first time. The squad started strong, outscoring opponents 15 to 1 in the first three rounds to qualify for the final. There the team fell behind 2–0 to Belgium before abandoning the match in protest in the 40th minute. Czechoslovakia, which was not guaranteed the