(a) An operator or carrier employee fueling a motor vehicle used to transport migrant agricultural workers may not:
(1) fuel the motor vehicle while the engine is running unless running the engine is required to fuel the vehicle;
(2) smoke or expose any open flame in the vicinity of the motor vehicle;
(3) fuel the motor vehicle when the nozzle of the fuel hose is not in continuous contact with the intake pipe of the fuel tank; or
(4) permit any other person to engage in an activity that would likely result in a fire or explosion.
(b) A person may carry fuel on the motor vehicle for use in the motor vehicle or an accessory only in a properly mounted fuel tank.