What does a double solid yellow line indicate?

A double solid yellow line indicates that no passing is permitted in either direction. This marking is used to enhance safety by clearly signaling to drivers that overtaking another vehicle is not allowed because it could lead to dangerous situations. The two solid lines reinforce the idea that both lanes of traffic must stay in their respective lanes without attempting to pass, regardless of the direction of travel. The presence of these lines is a strong indication that the area is potentially hazardous, such as in cases where visibility is limited or the roadway has sharp curves. This helps to prevent accidents and promotes a safer driving environment for everyone on the road.