What type of sign warns you to watch right and left for cross traffic?

A sign that warns you to watch right and left for cross traffic is known as a crossroad ahead sign. This sign is crucial as it indicates to drivers that they are approaching an intersection where vehicles from side roads may be entering the roadway or crossing their path. It serves as a reminder to be vigilant and prepared to stop or yield as necessary, significantly enhancing safety in areas where cross traffic is prevalent.

Other signs like stop and yield signs inform drivers of the requirements at intersections (to stop or yield the right-of-way), while caution signs typically alert drivers to potential hazards ahead. However, the specific directive to be aware of cross traffic is most directly conveyed by the crossroad ahead sign.