What does lock mean?

[VanVivian]

Speed lock is when the vehicle speed reaches the speed set by the computer, the lock button will automatically press to prevent accidental opening of the car door. The following is the relevant introduction: 1. Meaning: It is determined by the vehicle speed, gear position, and throttle opening. In principle, under the same gear position, the smaller the throttle opening required to reach the same vehicle speed, the earlier the lock-up clutch will engage. For example, a certain transmission stipulates: in 3rd gear, when the vehicle speed reaches 40KM and the throttle opening is 20%. As long as these three conditions are met, the computer will instruct the lock-up clutch to engage. If any one condition is missing, it will not engage. 2. Advantages: Anti-theft, the door locks quickly after driving to prevent door-pulling robberies during traffic jams or at red lights; it provides protection for children inside the car, preventing child passengers from opening the door while driving.