What type of sign cautions you to watch for cross traffic?

The sign that cautions you to watch for cross traffic is the crossroad ahead sign. This sign is specifically designed to alert drivers that they are approaching an intersection where cross traffic may be present. It serves as a warning to reduce speed and be prepared to yield to vehicles coming from the side roads, enhancing safety by increasing driver awareness in potentially hazardous situations.

Other types of signs serve different purposes. A yield sign indicates that you must allow other traffic to proceed before you continue, often used at intersections but not specifically warning of cross traffic. A stop sign requires you to come to a complete stop and check for traffic, but it does not explicitly notify you that cross traffic could be approaching. A no entry sign prevents vehicles from entering a certain area, which is unrelated to cautioning about cross traffic.