| Ferry
transit |
Scheduled ferry service
running between points within a city or the same metropolitan area. |
|
| Ferry
intercity |
Scheduled ferry service
running between points that are not within the same metropolitan area, or are
not located in any metropolitan area. |
|
| Bus
transit |
Bus service operated on a
route within a city or single metropolitan area. |
Most often operated by a
transit agency, a private company operating under contract to a transit
agency or authority, or in some cases service is operated by a private
company. |
| Bus
intercity |
Scheduled bus service
running on routes that are not completely within the same metropolitan area,
or link locations not in any metropolitan area. |
In addition to
over-the-road scheduled buses, this category includes scheduled airport bus
services from cities outside of the metropolitan area served by the airport. |
| Bus
code share |
A scheduled bus service
that is sold as a connection by a carrier of another mode as a connection to
that mode. |
While this is usually a
route that would be classified as Bus Intercity, it is operated
specifically as an intermodal feeder to another mode, and as such is
highlighted with a separate category. |
| Bus
supplemental |
A scheduled bus service
operated along an intercity rail route to provide additional frequencies for
travelers on the rail route. |
While the trip on a
supplemental bus may not involve a connection to another mode, it is a
service that is operated as an additional frequency in conjunction with
another mode. As such it is highlighted with a separate category. |
| Rail
intercity |
Scheduled rail service
operated by either Amtrak or the Alaska Railroad, running on routes that are
not confined to a single metropolitan area. |
|
| Rail
commuter |
Scheduled rail service
operated by a commuter railroad, on the national rail network, usually within
a single metropolitan area. |
|
| Rail
heavy |
A transit rail service such
as a subway or elevated train that operates on a dedicated right of way
within a city or metropolitan area. |
|
| Rail
light |
A transit rail service such
as a light rail vehicle, streetcar or trolley car operating on a right of way
that includes street running and may also include running on dedicated
trackage. |
|
| Air
service |
Served by scheduled airline
service that is open to public sale. |
|
