Air Brake Fsx Do All Air Brake Trucks Come With Standard Transmission?

Do all air brake trucks come with standard transmission? - air brake fsx

It's like the truck types in the category of Class B CDL (concrete mixers, dump trucks, barges), Class A NO

There are some that come with the machine? And besides, it's hard to run this truck standard, compared to a standard transmission method vehicle? If I'm never one, before I make a broad education, or simply need a little exercise?