I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Raleigh is also served by Triangle Transit (known formerly as the Triangle Transit Authority, or TTA). Triangle Transit offers scheduled, fixed-route regional and commuter bus service between Raleigh and the region's other principal cities of Durham, Cary and Chapel Hill, as well as to and from the Raleigh-Durham International Airport, Research Triangle Park and several of the region's larger suburban communities. Triangle Transit also coordinates an extensive vanpool and rideshare program that serves the region's larger employers and commute destinations."?
A:
What is this public transportation considered since it always makes the same stops without variation?