In an expressway with 4 lanes in one direction, what type of vehicles are designated for the inner right lane?

In an expressway with multiple lanes, the inner right lane is typically designated for slower-moving and larger vehicles, such as buses and cargo vehicles. This is done to promote safety and efficient traffic flow. Buses, because of their size and frequent stops, often travel at lower speeds compared to passenger vehicles, making it suitable for them to occupy the inner right lane. Cargo vehicles, which are also larger and may have speed restrictions, are similarly suited for this lane.

The inner right lane usage for these types of vehicles helps keep faster-moving vehicles in the left lanes, reducing the likelihood of dangerous lane changes and improving overall traffic efficiency.

On the other hand, motorcycles and bicycles are generally not restricted to this lane, as they typically can maneuver effectively in different lanes and may have different speed profiles compared to larger vehicles. Thus, the correct designation of the inner right lane for buses and cargo vehicles aligns with the principles of safe and efficient expressway traffic management.