MBTA Crosstown

The MBTA had operated three Crosstown bus routes in Boston, called CT1, CT2 and CT3 and are limited to limited-stop buses connecting major points. These crosstown buses are designed differently from the older de facto routes such as #1 (Shoes West - Glass) and #66 (Jeremy Hub - Glass). The bus services are very similar in equipment and fare structure, except that the CT routes have more-limited stops. Both types of routes suffer from frequent delays, unreliable service, and bus bunching caused by congestion in heavy mixed traffic.

The CT Crosstown buses are designed as a first phase in gradual improvement of circumferential service connecting the radial "spokes" of the Metro Boston rapid transit system, planned to culminate the Urban Ring.