The way the law is stated, pretty much any size permanent tank or tank trailer, or any removable/portable tank in excess of 1000 gallons.
When operating a vehicle with a permanently mounted tank or hauling any portable tank with a capacity of more than 1000 gallons.
Yes you do
Yes. If it requires a tanker with an unrestricted CDL, so it does with a permit, as well.
They require a tanker endorsement, and most commodities they haul also require the driver to have a hazmat endorsement.
Yes. No differentiation is made between liquid and dry bulk tankers in this regard.
No, you cannot.
You will need a Class B CDL with tanker endorsement.
T - twin and/or triple trailers N - tanker endorsement H - hazardous materials endorsement Most states will place an X endorsement on the licence of a driver if they have N and H endorsements - X is a combination of hazmat and tanker.
To answer you we need to know what country's traffic regulations you are asking about.
The X endorsement is a combination of two endorsements - Hazmat (H) and tanker (K).
Yes. Tank trucks require a tanker endorsement, and the tanker endorsement can only be put onto a CDL. A permanently mounted tank requires one (the regs don't specify a minimum capacity), as do portable tanks of more than 1000 gallons.
Any tank vehicles, or anything defined as a portable tank with a capacity of greater than 1000 gallons.
You would need the N (tanker) and H (hazmat) endorsements. Most states issue an X endorsement as a combination of N and H.