ABS not required

Thanks for this. These exemptions are the same as the CVSA document I linked above.

 

Going buy the regs quoted, it appears that the 51 ton may not cover it any longer. It says "GVW of 120,000 lb". That would be a 60 ton trailer.

Am I reading this wrong?

 

I'm not sure, I was at our local Talbert dealer today that's where that 51 ton tag I posted came from. The had 3 51 tons, a 55 ton and a 35 ton. The 51's and the 55 did not have abs, the 35 did.

 

That's the way I read it too.

 

Maybe they are figuring the tractor into the equation because the jeeps and boosters would need them if they were only considering the trailer as they are actually considered separate trailers.

 

I think the Jeep and Booster would be covered under part G of the S3 section as a load converter dolly. Unless that's something else that I haven't heard of before.

 

I don't think you are understanding correctly. GVW is Gross Vehicle Weight, not Cargo Capacity.

 

Heavy,
You may be right. A 50 ton capacity trailer that weighs 20,000lb would have a GVW of 120,000lb.

 

Except that the GVWR of the trailer only includes the weight rating on the trailer axles, not the total weight on the trailer, plus the trailer weight, as a portion of this weight will be on the tractor. Or do I have this wrong?

 

Trailer GVW does not include the tractor. It is cargo capacity plus trailer tare.
My trailer VIN tag says "GVWR 69,900kgs" (77ton) and it's a 2 axle trailer. The trailer is 70ton rated, and of course the jeep and booster need to be connected to distribute the weight appropriately over the axles, but the trailer has to be rated high enough to support the payload.
The booster VIN tag says "GVWR 35,154kgs" (38.75ton) which is half of the trailer rating because it becomes a 50% divider when connected to the trailer.
The trailer rating is NOT the sum of all the components (jeeps, boosters, etc) GVWR.