What does a dashed yellow line on the road indicate?

A dashed yellow line on the road indicates that passing is allowed, but only when it is safe to do so. This marking is used to separate lanes of traffic moving in opposite directions and signifies to drivers that they may change lanes or overtake another vehicle if they can do so safely, meaning they have a clear view of oncoming traffic and can make the maneuver without risk.

This flexibility is crucial for maintaining traffic flow and allows drivers to make better use of the roadway under certain conditions. Drivers should always exercise caution and ensure that the road ahead is clear when considering passing, even with this visual indication permissibly allowing it.