In most cases these are dedicated motorcoach routes, but can also be non-dedicated intercity bus services, transit buses, vans, taxis, ferry boats and commuter rail trains.
Train and Thruway tickets are typically purchased together from Amtrak for the length of a passenger's journey and connections are timed for guaranteed transfers between the two services.
[1] The following year, Amtrak launched an agreement with Greyhound allowing for passengers to buy combined bus and rail tickets for connecting services run by the two companies.
[2] Amtrak launched a significant expansion of Thruway Motorcoach services across the United States in 2014.
[1] As a result of a 2019 state law, most Thruway routes in California are available to passengers using only buses without connecting to an Amtrak train.