What does a solid yellow line indicate?

Answer: B — No passing allowed

A solid yellow line serves as a critical traffic control marking that indicates no passing is allowed. This reflects the need for caution, particularly in areas where visibility is limited or where there may be oncoming traffic that poses a hazard to overtaking a vehicle. The presence of a solid yellow line is a signal to drivers, including motorcyclists, that they should remain in their lane and not attempt to pass other vehicles until conditions are deemed safe. In contrast, a broken yellow line would indicate that passing is permissible when safe, while the other options, such as a bike lane or pedestrian crossing, are represented by different markings entirely. Thus, understanding the implications of a solid yellow line is essential for maintaining safe road habits and complying with traffic laws.