Our company in Texas has just bought a new hazmat service truck from Arizona. The vehicle will have no hazmat material in the tanks. We are wanting to drive the hazmat truck back. However, I have a question. Does the driver have to have hazmat placards and a hazmat endorsement even if no material is in the hazmat vehicle?
If you aren't hauling a hazardous material then you don't need either. As long as the tank has been washed since it's last load.
As Harbinger117 pointed out, as long as there is no residue, and, there shouldn't be, since, you said it is new. Your profile indicates you are not a truck driver. I just wanted to ask what is the gross vehicle weight of the truck you are bringing back? Be safe.