A driver may pass another vehicle on a two-lane road if:

Answer: B — There is a single broken yellow line between the two lanes.

When passing another vehicle on a two-lane road, it's important to observe the road markings that indicate whether passing is permissible or not. A single broken yellow line between the two lanes signifies that passing is allowed. This marking indicates that the traffic pattern permits overtaking other vehicles when it is safe to do so. Drivers should ensure that they have a clear view of oncoming traffic and enough space to complete the maneuver safely before proceeding. While the presence of other factors, such as the speed of the vehicle being passed or the visibility conditions, may influence the decision to pass, the critical determinant is the road marking. The broken yellow line specifically denotes that the driver is legally allowed to pass, provided that they do so safely.