Traffic-control devices designate the center lane as a two-way left-turn lane. Which use is allowed when otherwise lawful and safe?

Correct answer: For a left turn or U-turn, driving in it only the shortest distance.

Why

For a lane specifically designated by traffic-control devices as a two-way left-turn lane, Maryland allows left turns from or into the lane and U-turns when otherwise lawful. Use it for the shortest practicable distance and avoid obstructing opposing traffic. Do not use it for ordinary through travel or passing. This designated-lane rule is different from the statute’s separate provision for an undesignated three-lane, two-way road.

Verified against Maryland Driver’s Manual and current Transportation Article · Using a shared left-turn lane · p. 24