Not only is it legal, it is highly recommended. With the high price of gas, more people are beginning to ride bicycles and stores are beginning to put bike racks out front. Unfortunately, people will steal anything these days. My daughter had the two lower fog/ running lights stolen off her car while in a parking lot. It used to be said that if you didn't want something stolen, nail it down. Now, they not only steal the item but the nails as well.