Traffic signals and markings1 of 2
What does a solid double yellow line down the center of a two-lane highway indicate?
The answer
Answer: A. Double solid yellow lines mark the center of a two-way road where passing is prohibited for traffic in both directions. You may cross double yellow lines only to make a left turn into or from an alley, private road, or driveway after yielding to oncoming traffic. You cannot drive to the left of double solid yellow lines to pass other vehicles at any time.
Source: Oregon Driver Manual (2026-2027) — Lane Travel, p. 22