What does B double mean?
What does B double mean? A B-double is defined in the Heavy Vehicle National Law (HVNL) as a “combination consisting of a prime mover towing two semitrailers, with the first semitrailer being attached directly to the prime mover by a fifth wheel coupling and the second semitrailer being mounted on the rear of the first semitrailer by a fifth ...
Are road trains legal in the US?
The term road train is not commonly used in the United States; turnpike train has been used, generally in a pejorative sense. In the western United States LCVs are allowed on many Interstate highways. The only LCVs allowed nationwide are STAA doubles.