The kind of driving that teenagers are expected to do is wildly different from trucking. The biggest vehicle I've ever driven was a U-Haul and even that require

The kind of driving that teenagers are expected to do is wildly different from trucking. The biggest vehicle I've ever driven was a U-Haul and even that requires more focus and care than regular driving. Add another 25 feet of length, a trailer which can rotate independently of the vehicle, and tight timetables into the mix, and you're certainly looking at more skill than the average driver needs.