The 1,500-Gallon Water Tank and the N Endorsement
A Florida landscaping company assigns a driver with a Class B CDL and no N endorsement to a 33,000-lb GVWR truck carrying a temporarily mounted 1,500-gallon water tank. The tank is filled to 1,200 gallons. The company uses the truck to water median plants within 50 miles of the yard and never crosses state lines. The truck has a placard holder on the rear but no placards because water is not hazardous. The driver's medical card is current. A DOT inspector stops the truck and asks for the license, shipping paper, and tank inspection documents. The driver says, It's just water, so I don't need the tank endorsement. The tank has a manufacturer's data plate, but the mounting bolts show rust. The truck has air brakes.
1. Does this driver need an N endorsement? Explain the definition that controls the answer.
Read the worked answer
Yes, the driver needs an N endorsement. For CDL purposes, a tank vehicle is one designed to carry liquid or gas in a tank with an individual capacity over 119 gallons and an aggregate capacity of 1,000 gallons or more, whether the tank is permanently or temporarily attached. This truck has a 1,500-gallon tank and a 33,000-lb GVWR, so it meets the tank-vehicle definition and requires a Class B CDL with N. The fact that the cargo is water does not remove the N requirement; it only means the driver does not need H or X for this load and the truck does not need hazmat placards. Florida uses the federal CDL tank-vehicle definition.
2. What documents and equipment should the driver be able to present, and what does not apply because the cargo is water?
Read the worked answer
The inspector can ask for the CDL, medical card, registration, and inspection documents. For water, no hazmat shipping paper is required, and placards are not required. The cargo-tank periodic test certificate under the hazmat rules is not the same issue for a non-hazmat water tank, but the tank data plate, mounting, hoses, and valves still must be in safe condition. The driver should be able to explain the load and show that the tank is secured. The missing N endorsement is a licensing violation even if the water is harmless. The rusted mounting bolts are a separate equipment defect that the inspector may place out of service.
3. What should the driver and company do about the rusted mounting bolts and the missing endorsement?
Read the worked answer
The company should remove the truck from service until the mounting bolts are repaired by a qualified shop. Rusted bolts can allow the tank to shift, crack a fitting, or separate in a stop or crash; a loaded 1,200-gallon water tank is about 10,000 lb of liquid, so the mounting is a serious load-securement item. The driver should not drive it loaded. The company should also assign an N-endorsed driver or have this driver obtain the endorsement before operating the truck. The driver should document the defect, notify the supervisor, and not accept the vehicle just because the cargo is water.