What does a solid yellow line indicate?

A solid yellow line serves as a critical road marking that indicates no passing is allowed. This means that vehicles are not permitted to cross this line to overtake another vehicle. The presence of a solid yellow line generally signifies that there are conditions ahead that may make passing unsafe, such as curves, hills, or other visibility issues.

In contrast, passing is permitted where there are broken yellow lines, which allow drivers to cross the line when it is safe to do so. The other options do not accurately reflect the meaning of a solid yellow line; for instance, a no parking zone is typically marked by specific signs or red lines. Similarly, pedestrian crossings are indicated through various other road markings and signage that alert drivers to watch for people crossing the street. Thus, understanding the significance of a solid yellow line helps ensure safe driving practices and adherence to traffic laws.