If only a trailer is equipped with an Anti-Lock Braking System (ABS):

Question

If a trailer is equipped with an Anti-Lock Braking System (ABS) but the tractor is not, the driver will still have increased control while braking. A trailer with ABS is less likely to swing out of its lane than a trailer without ABS.

Accepted Answer

The trailer is less likely to swing out.

Answer

The brakes will likely not work.

Answer

The tractor brakes should not be used.