For internal combustion engines with a fuel tank attached and vehicles powered by a flammable liquid fuel with a flashpoint less than 38°C, the fuel tank(s) are empty (i.e. the fuel tank has been drained and the vehicle cannot be operated due to a lack of fuel) and installed batteries are protected from short-circuit;
2) For internal combustion engines using flammable liquid fuel with a flashpoint of 38°C or above, there are no leaks in any portion of the fuel system, the fuel tank contains 450 L of fuel or less and installed batteries are protected from short-circuit;
3) For vehicles with internal combustion engines with an attached fuel tank and vehicles powered by a flammable gas (liquefied or compressed), the fuel tank(s) are empty and the positive pressure in the tank does not exceed 2 bar, and the fuel shut-off or isolation valve is closed and secured, and installed batteries are protected from short-circuit;
4) For vehicles or batter powered equipment solely powered by a wet or dry electric storage battery or a sodium battery, the battery is protected from short-circuit;
5) For vehicles with an internal combustion engine powered by a flammable liquid or flammable gas, the engine has been cleaned, drained and purged of all flammable liquids and gases or the engine has been sealed to prevent leakage of any residue; and
6) For vehicles with fuel cell engines, the engine has been protected from inadvertent operation by closing fuel supply lines or by other means and the fuel supply reservoir has been drained and sealed.