School crossing, merge, and no passing signs are examples of which type of sign?

School crossing, merge, and no passing signs are classified as warning signs because they are designed to alert drivers to potential hazards or changes in road conditions that require caution. These signs help convey important messages about upcoming situations that could affect safe driving, such as the presence of children near a school, merging traffic, or areas where passing is prohibited due to safety concerns.

Warning signs are usually yellow or orange and feature symbols or messages that indicate the nature of the warning, allowing drivers to take the necessary precautions. For instance, a school crossing sign alerts drivers to the possibility of children crossing the street, encouraging them to slow down and be vigilant.

In contrast, regulatory signs are meant to inform drivers of laws that must be followed, informational signs provide general information about the road or area, and directional signs assist with navigation. Each of these types of signs serves a distinct purpose, and understanding the role of warning signs is crucial for safe and responsible driving.