The car rally is one of the car road races. It is an automobile road race project in which the participating vehicles arrive at the sub-site target within the specified time and complete the inspection and maintenance of the vehicle according to the specified average speed, driving route. The first official rally was held in the UK in 1900, with a total length of more than 1,600 kilometers. The longest journey was the 1977 rally from London, England to Sydney, Australia, with a total length of more than 31,100 kilometers and a shared time of 46 days.
During the competition, there are no other vehicles on the route, which limits the distance and arrival time of the participating cars. The inspection station on the route checks whether it passes within the specified time. This is a competition that tests the performance and quality of the vehicle and tests the driver's skills. The participating cars must be mass-produced cars or modified cars. A short rally takes a few days and the elders can last for dozens of days. The rally divides the journey between the departure point and the termination site into a number of driving sections and stages, and has a feeding station and a rest station along the way. When driving on a driving section, the participating cars are subject to a certain speed limit, and must arrive at the end of each section according to the specified time. They can neither advance nor delay. They must abide by the local traffic rules while driving, and those who violate the rules will be deducted. During the stage, the car can run at full speed, sometimes at speeds of up to 200 kilometers per hour. At the end of the rally, the car and the driver with the least accumulated time and the lowest deducted score are the winners.