Originally Posted by
paipo
Trailers are issued their own plates in most, if not all, states. The cops are technically correct for stopping anyone with obscured plates. Most, however, will enforce the spirit of the law, not the letter of the law...thus, a warning instead of a ticket. It is legal "Probable Cause" for them to conduct a traffic enforcement stop on the motorist to see who's behind the wheel if they choose. They just never know what they'll find
That may be the case here. Another cop car also arrived at the scene and I thought that was strange. Maybe they thought they had a fish on the line. But everything else checked out okay and they let me go.