What does "Ahead only" mean for drivers?

The term "Ahead only" for drivers indicates that they are required to continue driving straight without making any turns to the left or right. This instruction is essential for maintaining traffic flow and ensuring that drivers follow designated routes, especially at intersections where turns might otherwise be permitted.

The other options, while they may pertain to driving rules or road signs, do not accurately capture the meaning of "Ahead only." For example, it does not indicate anything about one-way streets or specific parking regulations. Overall, understanding such directives helps prevent confusion for drivers and promotes safe and orderly traffic movement.