I was told that it was technically legal to run them in that situation. Probably depends on where you're at though. I wish my city would let them flash red at night, but that is too clever.
And he sayeth unto Perky, the numbers 2, 5, and/or 7 are an
abomination and should never be used in an internet forum
name, so sayeth the Lord. - Penguins 22, chapter 3, verse 8