[GreatWhitehunter]

Here in Ct trailers over 10k need a annual federal dot inspection. The dmv doesn't check to see if you've completed it before renewing the registration.
But get pulled over and pay the price. The inspection is pretty simple they check the lights brakes and needed accesories. Two wheel chocks and break away. They get around 100 bucks. But it's worth it for hassle's sake. You also don't get any reminder for the inspection so one need to be on his toes.

Matt T.