What does a double yellow line on the road indicate?

A double yellow line on the road indicates that no passing is allowed in either direction. This marking is used to emphasize that drivers must stay within their lanes, as attempting to pass is prohibited due to potential safety hazards, such as limited visibility or oncoming traffic. This rule helps to ensure safer driving conditions by reducing the risk of head-on collisions, which can occur when vehicles attempt to pass in high-risk areas. The presence of double yellow lines is a clear visual cue for drivers to maintain their position on the roadway without attempting to overtake another vehicle.