A plus sign on a road sign indicates what?

A plus sign on a road sign indicates an intersection ahead. This is an important warning for drivers as it informs them that they will soon be approaching a point where two or more roads meet. Understanding this sign helps drivers to prepare for potential stops or changes in traffic conditions that may occur as vehicles might be merging or crossing paths at the intersection. Being aware of such signs is critical for maintaining safety on the roads, allowing drivers to approach intersections with caution and to follow the right-of-way rules accordingly.

The other options refer to different types of signs: for instance, a stop sign or a warning for roadwork would not utilize a plus symbol, and a speed limit change would generally be indicated by a different sign configuration altogether. Each type of traffic sign is designed to convey a specific message, and recognizing the symbols associated with them is crucial for safe driving practices.