Re: Exceptions for such dual-purpose signs have been arranged.
LPG is used in various applications in the US and is usually, majority propane. Forktrucks commonly use LPG as a fuel, I seem to remember saying propane, fuel and maybe even just gas when I worked in a warehouse environment. It is common to see something stamped LP/LPG and most people familiar with the application would says propane.
Gas, in the US, is often used as a catch-all term for almost any petroleum based fuel, even if it is a stable liquid at 1 atmosphere and room temperature. It would not surprise me if someone said their heavy equipment earth-mover 'ran out of gas', everyone knows the earth-mover isn't using a petroleum gas nor using gasoline as a fuel. The only time you might have to specify is if the person not mechanically literate or unfamiliar with the equipment.
Biting the hand that feeds IT
