Originally Posted by Jag
If they aren't DOT approved, then technically they are not legal. May be important if you have vehicle inspections in your state/county.
That said, if you aim and use them responsibly, you aren't going to get pulled over.
The Biggest Misconception is that the DOT actually Approves Lamps & Lights. They do not. The DOT just Sets the Standard for what is Acceptable and what isn't.
Something can be DOT Approved, but that doesn't mean that is it still Street Legal.
What is really comes down to, is the Issue is at the Discretion of the Officer that Pulled you over. It's up to them if they're gonna give you a Ticket, Warning, or just keep Driving and not even bother Stopping you.