This is the 9-Speed Automatic Transmission based on the Mercedes' 9G-Tronic automatic transmission.
This mod is only for fun, therefore it obviously does not act like the one in real life.
The mod uses the gear ratios used in the 9G-Tronic automatic transmission and uses the torque converter by the ETK800.
I have noticed that the Citybus and Semi-truck doesn't really work with this setup, I might look into it later.
9-Speed Automatic Transmission for all vehicles 1.2
A 9-Speed Automatic Transmission based on the 9G-Tronic Automatic Transmission by Mercedes