The development of ABS systems dates back to the early 20th century. In the late 1970s, the rapid development of digital electronic technology and large-scale integrated circuits laid a technical foundation for the practical development of ABS systems. Many companies have successively developed various forms of ABS systems. Since the mid-1980s, ABS systems have developed in a cost-effective direction. Some companies have simplified the ABS structure and optimized the system, and launched economical ABS devices; some companies have launched rear-wheel ABS or four-wheel ABS systems suitable for light trucks and passenger and cargo vehicles. These efforts have created conditions for the rapid popularization of ABS. The ABS system is considered to be the most important technological achievement in safety since the seat belt was adopted in the automobile.