What type of lanes are reserved exclusively for certain vehicles on some roadways?

The correct answer is that certain lanes are reserved exclusively for buses only. In many urban and suburban areas, specific lanes are designated for bus use to facilitate public transportation, reduce traffic congestion, and increase the efficiency of the bus system. These bus lanes help ensure that buses can move more freely through areas where traffic might otherwise slow them down, allowing for quicker travel times and encouraging the use of public transit.

Other vehicle types, like motorcycles, bicycles, and emergency vehicles, may have their own designated lanes, but they generally do not have lanes that are solely reserved for their use in the same way that many jurisdictions reserve lanes specifically for buses. For instance, bicycles may have bike lanes that are shared with other forms of non-motorized transport, while emergency vehicles typically use regular lanes, although they may use sirens and lights to navigate through traffic.