Virginia Code Title 46.2. Motor Vehicles § 46.2-845. Limitation on U-turns

The driver of a vehicle within cities, towns or business districts of counties shall not turn his vehicle so as to proceed in the opposite direction except at an intersection.

No vehicle shall be turned so as to proceed in the opposite direction on any curve, or on the approach to or near the crest of a grade, where the vehicle cannot be seen by the driver of any other vehicle approaching from any direction within 500 feet.