What does at mean? What does car at mean? Medical AT means automatictransmission, which is the initials of automatic transmission, also called automatic transmission. Automatic transmission consists of hydraulic torque converter, planetary gear transmission and control mechanism, which can automatically change speed and torque according to road conditions, so that the owner can concentrate on road traffic. Automatic transmission refers to automatic gearbox, which is a transmission device that can automatically shift gears according to vehicle speed and engine speed. There are four common types of automobile automatic gearbox, namely hydraulic automatic gearbox, mechanical stepless automatic gearbox, electronically controlled mechanical automatic gearbox and dual clutch automatic gearbox.

Million car purchase subsidy