What type of sign provides information about U.S. or state route numbers?

Answer: B — Route sign

Route signs are specifically designed to provide drivers with information about U.S. or state route numbers. These signs usually feature a specific shape, color, and symbol representing the highway or route, enabling drivers to navigate and understand the roadway system more effectively. Yield signs indicate that a driver must yield the right-of-way to other vehicles and are not related to route identification. Stop signs are regulatory signs signaling drivers to come to a complete stop and do not provide route information. Warning signs alert drivers to potential hazards or changes in roadway conditions but also do not convey information about route numbers. Therefore, route signs play a crucial role in navigation by displaying the necessary route numbers to guide drivers along their journey.