Utah Code Title 41. Motor Vehicles § 41-6a-801. Turning--Manner--Traffic-control devices

(a) the operator of a vehicle intending to turn left shall approach the turn from the extreme left-hand lane for traffic moving in the same direction;

(b) whenever practicable, shall be made by turning onto the roadway being entered in the extreme left-hand lane for traffic moving in the new direction, unless otherwise directed by a traffic-control device; and

(c) may be made on a highway across solid double yellow line pavement markings indicating a two-direction, no-passing zone.

(a) where a two-way left turn lane is provided, a left turn may not be made from any other lane;

(b) a vehicle may not be driven in the two-way left turn lane except when preparing for or making:

(d) the operator of a vehicle that has turned left into the two-way left turn lane may not travel in the lane more than 500 feet unless the operator intends to turn left and Subsection (3)(c)(ii) applies; and

(e) the operator of a vehicle may not travel straight through an intersection in a two-way left turn lane.

(4)(a) A highway authority in its jurisdiction may provide exceptions to the provisions of this section by erecting traffic-control devices directing a different course to be traveled by turning vehicles.

(b) The operator of a vehicle may not turn a vehicle in violation of a traffic-control device erected under Subsection (4)(a).