Is a tow truck considered a commercial vehicle?
It depends, is it and F-550 or F-650? If it is one of those,
then yes. But if it is and F-450, I do not know, because it is sold
to the public, while the 550 and 650 are only sold to people who
need them.
In CA any size tow truck would be considered a commercial
vehicle.
In CA any size truck with an open bed (meaning no camper-shell)
is considered a commercial vehicle. This means whether a company or
individual is operating the truck it is considered a commercial
vehicle.