What are the common layout forms of automotive transmission systems?

[DelJeremiah]

There are 5 common layout forms of automotive transmission systems: front-engine rear-wheel drive, front-engine front-wheel drive, rear-engine rear-wheel drive, mid-engine rear-wheel drive, and all-wheel drive. Front-engine rear-wheel drive, abbreviated as FR, is a traditional layout form with relatively simple structure and high operational reliability, mostly used in trucks, some cars, and buses. Front-engine front-wheel drive, abbreviated as FF, is currently the more commonly used layout form in cars, featuring a compact structure, reduced vehicle weight, and improved high-speed stability by lowering the chassis height. Rear-engine rear-wheel drive, abbreviated as RR, is applied in medium and large buses, with the advantages of reducing interior noise and facilitating the interior layout of the vehicle body.