I know this is an old thread, but I have been looking at buying these for the past month (Probably biting the bullet today or tomorrow). Can't decide if I want the sequential or just the plain turn signals. As far as "law" in the US, there is a federal standard on how many lights you can have lit on the front of a vehicle at one time. That's the reason my Miata MX-5 factory fog lights turn off when the high beams are turned on. On the on hand, and as a retire Law Enforcement Officer, I can tell you I see all kinds of violations as far as lights go, that go completely unenforced. Blue HIDs as headlights or blue lights on a vehicle here is a big no-no, but still plenty of people running around with them. These look so stock, especially the double layer leds, I can't see it would be an issue unless the enforcement personnel was just looking to add violations Keep in mind some of these have 3 colors white drl, yellow turn signal and blue when the headlights are on. You state law may vary.