The MBTA has 4 rapid transit bus lines with a total of 30 stops.
 These are color-coded silver:
SL1 travels from Logan Airport to South Station, stopping at the federal courthouse, World Trade Center, and each terminal at the airport
SL2 travels from the Boston Design Center to South Station.
 It stops at the federal courthouse and the World Trade Center on the way.

SL4 travels from Dudley Station to South Station.
 Dudley Station is a major station in Roxbury with connections to 16 different buses.
 The SL4's other stops include Tufts Medical Center and Chinatown.

SL5 travels from Dudley Station to Downtown Crossing.
 Downtown Crossing is a center of public transit in Boston, with connections to the Red, Orange, and Silver Lines, and 15 different buses.
 This is the most popular bus route on the MBTA.
 About 14,709 people ride this bus every day.
The MBTA has 4 rapid transit bus lines with a total of 30 stops.  These are color-coded silver:
SL1 travels from Logan Airport to South Station, stopping at the federal courthouse, World Trade Center, and each terminal at the airport
SL2 travels from the Boston Design Center to South Station.  It stops at the federal courthouse and the World Trade Center on the way.
SL4 travels from Dudley Station to South Station.  Dudley Station is a major station in Roxbury with connections to 16 different buses.  The SL4's other stops include Tufts Medical Center and Chinatown.
SL5 travels from Dudley Station to Downtown Crossing.  Downtown Crossing is a center of public transit in Boston, with connections to the Red, Orange, and Silver Lines, and 15 different buses.  This is the most popular bus route on the MBTA.  About 14,709 people ride this bus every day.
Massachusetts Bay Transportation Authority