What does a double yellow line indicate?

A double yellow line indicates that no parking or stopping is allowed in the area where the lines are present. This is designed to maintain clear traffic flow and ensure safety on the roads. The presence of double yellow lines is a clear indication that crossing the lines to pass or enter the area is prohibited and serves to keep vehicles from stopping in potentially hazardous locations.

While the other options might seem plausible in different contexts, they don't accurately describe the purpose of a double yellow line. The lines are specifically meant for indicating restrictions on stopping, rather than parking regulations, bicycle lanes, or construction zones. It's important to understand these markings to avoid potential traffic violations and to promote safe driving practices.