If you have any skill at all backing up a vehicle you can back up a double trailer, single trailer is harder except for distance. All this can be taught, except they will train any monkey from any country to drive nowadays. The truckers need to clean up as much if not more than the cops in this country. Yea, I know most car drivers are idiots, but a lot of big rig drivers are just as bad or worse. They just don’t give a fuck anymore.