Utah Code Title 41. Motor Vehicles § 41-6a-802. Turning around--Where prohibited--Visibility

(a) unless the movement can be made safely and without interfering with other traffic;

(b) on any curve, or upon the approach to, or near the crest of a grade, if the vehicle is not visible at a distance of 500 feet by the operator of any other vehicle approaching from either direction;  and

(c) on a railroad track or railroad grade crossing.