What does a double yellow line indicate on the road?

A double yellow line on the road indicates a no passing zone. This means that drivers are prohibited from crossing the double line to pass another vehicle. The presence of these lines is a safety measure designed to prevent accidents, especially in areas where visibility is limited or where the road may be particularly dangerous for overtaking.

This marking serves to alert drivers that they should remain in their lane and not attempt to pass vehicles in the same direction. It is critical for maintaining safe driving practices, especially on roads where the potential for collisions is increased. Understanding this road marking is essential for all road users, particularly motorcyclists who may be more vulnerable during passing maneuvers.

The other options identify different road rules or situations that do not pertain to the meaning of double yellow lines. For instance, no parking regulations are indicated by different signage, while lane separation is usually marked with solid or broken lines to guide traffic flow rather than to denote passing restrictions.