A "route number" is a unique identifier assigned to a specific path or course taken by a vehicle, such as a bus or train. This number helps passengers easily identify and locate the service they need, ensuring they board the correct vehicle. Route numbers are commonly used in public transportation systems, making navigation simpler for commuters. In many cities, route numbers are displayed prominently on vehicles and at stops, often accompanied by information about the destination and stops along the way. This system allows for efficient travel planning and helps reduce confusion for riders using the public transit network.