What is indicated by an intersection sign?

An intersection sign serves as a warning to drivers about potential changes in the road layout ahead, indicating that they may need to adjust their speed or be prepared to navigate through the intersection. This is crucial for maintaining safety as intersections can present various challenges, such as merging traffic, turn lanes, or the presence of pedestrians.

By understanding that the intersection sign signifies potential alterations in the road's structure, drivers can anticipate and react appropriately to varying traffic scenarios. This preparation is essential for avoiding accidents and ensuring smooth traffic flow as vehicles converge from different directions.

The other choices suggest rules that are not conveyed by an intersection sign. For instance, driving straight through without stopping contradicts the need for caution at intersections, where traffic signals and stop signs may apply. Similarly, an intersection sign does not prohibit turns or imply that only pedestrians can cross; it simply alerts drivers to the upcoming intersection and encourages them to pay attention to the other signs and signals that govern traffic in that area.