Seatbelts existed before the invention of automobiles. In 1885, carriages were widely used in Europe. At that time, seatbelts were simply used to prevent passengers from falling off the carriages. By 1910 seatbelts began to appear on airplanes. In 1922, the sports cars on the racetrack began to use the safety belt. In 1955, the Ford cars in the United States began to use the safety belt. Generally speaking, the safety belt in this period was mainly two-point safety belt. In 1955, Niles, an aircraft designer, came to work in Volvo car company and invented the three-point seat belt. In 1963, Volvo car company began to register Niles's three-point car seat belt and assemble it on its own cars. In 1968, the United States stipulated that all the seats facing the front of the car should be equipped with seat belts, and developed countries such as Europe and Japan have successively formulated the regulations that car occupants must wear seat belts. China's Ministry of Public Security issued a circular on November 15, 1992, stipulating that from July 1, 1993, drivers of all passenger cars (including sedans, jeeps, minivans, minivans) and passengers in front seats must use safety belts. Article 51 of the road traffic safety law stipulates that when a motor vehicle is driving, the driver and the passenger shall use the safety belt in accordance with the provisions. At present, the most widely used three-point seat belt.