It is a DOT hazmat placard meaning "compressed oxygen."
Orange placards indicate Explosives in any of six classification levels, with 6 (DOT code 1.6) being the least explosive.
nonflammable gas 2 green placard
Health hazard.
Oxygen
True -this is for HAZMAT
If you're hauling hazmat, missing hazmat signs are a federal offense. If you're NOT hauling hazmat, you don't even need the placard frames.
The radioactive placard on a vehicle indicates that the vehicle carries some amount or regulated radioactive material.
Green diamond with white tank symbal
The Dangerous When Wet placard is a square on point (or diamond) placard with white markings on a blue background. The words "Dangerous When Wet are printed across the middle, with a drawing of a flame centered in the upper corner, and the numeral four (4) in the bottom corner to indicate the Hazard Class.
The placard on the wall displayed the museum's latest exhibition information.
The word placard (noun meaning a sign, a notice, an advertisement) has no direct antonym; the closest would be 'without placard' or 'placard-less'.
the placard have been posted everywhere.
placard means a poster for public display. Example: there was no placard outside.
how much propane can you haul without hazmat endorsement
Green mucous means your body is currently fighting an infection.
Yes. Hazmat is a combination of "hazardous" and "materials"