(a) No vehicle shall be turned so as to proceed in the opposite direction upon any curve, or upon the approach to or near the crest of a grade, where such vehicle cannot be seen by the driver of any other vehicle approaching from either direction within 500 feet.
(WVaC 17C-8-6)
(b) The driver of any vehicle shall not turn such vehicle so as to proceed in the opposite direction upon any street in the central traffic district or in a business district and shall not, upon any other street, so turn a vehicle unless such movement can be made in safety and without interfering with other traffic.
(1947 Code §19.51)