The organization works closely with other organizations such as SEPTA, Krapf Transit and the Delaware Valley Regional Planning Commission.

[1] Regular mass transit services under the name "ChescoBus" include: Former service: The agency was created in May 1992 as the Chester Valley TMA, with 14 founding members.

In June 1995, the name was changed to TMACC to better attract members from across the county.

[11] In 2015, TMACC rebranded their buses to be green color and adopted the name "ChescoBus" for their bus routes; TMACC also installed new bus stop signs.

[12][13] This was part of a move to attract riders to the routes, which serve portions of Chester County where mass transit is limited.