When refueling a vehicle that contains hazardous materials:

Question

If you need to refuel a vehicle carrying hazardous materials, you must first turn off the engine. While refueling, someone must be at the nozzle and controlling the fuel flow at all times.

Accepted Answer

The engine should be turned off.

Answer

The engine should be left on.

Answer

The gas nozzle may be left unattended.

Answer

No other vehicles should be at the refueling station.