What is the left lane rule?

Question

Washington State's left lane rule states that no vehicle or combination weighing over 10,000 pounds may be driven in the left lane of a limited-access road with three or more lanes traveling in one direction, unless preparing to make a left turn.

Accepted Answer

Heavy vehicles may only be driven in the left lane of a road with three lanes traveling in one direction if making a left turn.

Answer

Heavy vehicles must only be driven in the left lane of a road with three lanes traveling in one direction.

Answer

Heavy vehicles cannot be driven in the left lane of a three lane road for any purpose.