What type of construction sign is typically used to inform drivers about road work ahead?

Answer: B — Warning sign

A warning sign is specifically designed to alert drivers to potential hazards ahead, particularly in situations like road work or construction zones. These signs are typically yellow and diamond-shaped, conveying the message to reduce speed or be cautious due to upcoming obstacles or changes in the road conditions. The primary goal of warning signs is to protect both drivers and workers by ensuring that everyone is aware of the construction activity. In the context of road construction, these warning signs indicate that drivers need to be vigilant and prepare for potential disruptions, such as lane closures or workers in the area. This timely information helps prevent accidents and allows for safe navigation through construction zones. The other types of signs listed serve different purposes: regulatory signs enforce laws, information signs provide general guidance, and directional signs assist with navigation.