Hazmat placarding for 2 attached trailers

What company is turning you loose with that load when you don't even know what placards you need??

 

what is in the trailer for that trailer needs to placarded on that trailer.

 

Whole unit/ truck 1.1D

 

Each trailer should be placarded separately.

 

Each trailer separately 1.1 and 1.45

Make sure you have the bills for both of them, that's basic.

The guide that makes my answer is that whatever contents of a particular class or subclass has to match the placard on the outside of the vehicle etc.

You can probably use a Explosives A on everything if that is what it is inside those trailers. That might be a older placard from my time.

 

Here are the divisions of Explosives Since I do not know the exact cargo, I cannot go any further than what you already described as 1.1 and 1.4. The 1.1 is more dangerous of the two. 1.4 less so, particularly if it has a seperate protection or two protections against a problem.

49 CFR 173.52 - Classification codes and compatibility groups of explosives.

You are trying to describe a contents of a trailer. You have two trailers. Both contents have seperate behavior in a fire or other situation.

Im not going to go any further here. If you still are having trouble, contact your safety within your company. Im pretty sure someone in your company has the authority necessary to confirm the placards. Because ultimately if there is going to be a problem with enforcement etc those things have to be correct on the rig.