What does a single dashed yellow line separating traffic mean?

Question

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.

Accepted Answer

Drivers may pass if it is safe to do so.

Answer

Both lanes travel in the same direction.

Answer

Drivers may not pass.

Answer

Drivers may pass, even if it could be dangerous.