What does a single dashed yellow line separating traffic mean?

Yellow lines separate traffic moving in opposite directions. A single dashed yellow line in the center of a road indicates that vehicles traveling in both directions are permitted to pass. Drivers may only begin a pass if they will not interfere with any oncoming traffic.

• Drivers may pass if it is safe to do so.
• Both lanes travel in the same direction.
• Drivers may not pass.
• Drivers may pass, even if it could be dangerous.