It is unlawful to make a U-turn simply to go the other way.

The Law Explained

This local traffic ordinance is delightfully redundant. In Richardson, U-turns are heavily restricted to prevent traffic jams on busy suburban thoroughfares. The wording of the old ordinance famously stated that making a 180-degree turn was forbidden if the driver's only intent was to travel in the opposite direction, which is the exact definition of a U-turn.