A driver is required to have a current and valid DOT health card (medical examiner's certificate) if operating a vehicle that is (Minnesota):
A driver is required to obtain a CDL to operate any of the following vehicles (Minnesota):
When selecting the proper tank size the key factor to think about is the route in which the truck will be driven. Many urban routes have small streets and cramped spaces making larger trucks hard to maneuver so smaller tanks are necessary. But some jobs require larger trucks because of the number of restrooms needed to be serviced.