I've always wondered if they were legal in my state, since I like them. Also, I've been planning to replace my crummy tail lights on the '54 this spring anyway.
So, I called our state HP and spoke to a Captain. He said in ND if the modification is "period correct" then it is legal. So, I could put blue-dots on my '54 and '59, but I couldn't put them on my '63.
I got the impression it depends a lot on the officer's knowledge. I mean, you'd have to be a real vintage vehicle guy to know that a blue dot is OK on the 54 but not the 63, and the officer I spoke to clearly didn't know the difference himself. Based on that conversation, I think you'd have to be getting pulled over for something more serious and then shoot your mouth off before they started picking on things like a blue dot tail light - at least in North Dakota.
