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
Compulsory figures control, and discipline. Proponents stated that figures taught basic skating skills, insisting that if skaters did not become proficient in figures, they would not be able to perform well-done short and long programs. The World Figure Sport Society has conducted festivals and competitions of compulsory figures, endorsed by the Ice Skating Institute, since 2015. "Der Spiegel" compared judging compulsory figures to the work of forensic scientists. After the skaters completed tracing figures, the judges scrutinized the circles made, and the process was repeated twice more. According to Harvey, compulsory figures took five hours to complete at U.S. National Championships and