well here in nashville, I got pulled over for my 3000k yellows, and I said yes sir, no sir....the whole business and he let me off with a warning. I made sure to get his car number. I called the station the next day to inquire about the law. They assured me that because of the fuzzy nature of old bulbs, it would be impossible for an officer to determine whether or not the bulbs were old or yellow just by looking, and that I shouldn't buy stock in it....lol