What's this

I suspect it's a rolling parking lot.

 

Some kind of tiny high-value hazmat carrier thingee?

 

Ohhhh......the bobtail....indoor plumbing!

 

I've seen those on explosives trucks before. I asssumed (you know what happens when we do that) that the trailer contained the actual explosives and that box the blasting caps or whatever you call it. I really don't know though, just throwing it up there to see if I was right.

 

LOL it is called a drom box we use to use them back in the dark ages to get around length and weight laws in some areas . there was also a drom deck that looked like a dance floor between the truck and trailer on log wheel base trucks .

 

Drom box.

It depends on what is being hauled, A&E trucks sometimes have them on it.

I had to drive a truck with one, it kept specific items for shipping in them. In my case the truck was used for segregated hazmat.

 

It's for hauling things like that and also for smaller hazmat shipments that can't be hauled together. BTW, the truck in the picture belongs to Boyle who does a lot of explosives hauling for the U.S. Govt.

 

Like others said, it's a drom, or "dromedary" box. It's where all the high paying freight goes to offset the loss you are taking by what's being hauled in the trailer., which is why they are bobtailing.