Byline: David Tanner, Land Line associate editor

If you don’t have a tanker endorsement already, you might consider obtaining one. Besides being handy for business, it could help you avoid penalties if you haul certain types of fluid bins. Why now? Some states may already be enforcing an expanded definition of “tank vehicle” that now applies to vehicles hauling an aggregate of 1,000 gallons in containers of 119 gallons or larger.

It’s quite possible that you run in a state, or wi...