Originally Posted by GoBob

I think you might be conflating Logan Express, the suburban bus service that runs out to lots around 128, and the Back Bay Express that runs free in one direction to Copley Square. I believe it's $3-5 on the return. Haven't taken it but seems to run frequently; I see them on Boylston street regularly. Buses are clean and new. Of course, it's subject to the same traffic peculiarities as any other vehicle.