alt=|left|thumb|A typical New Flyer XDE40 Hybrid bus The MBTA bus system, the nation's sixth largest by ridership, has 152 bus routes. Most routes provide local service in the urban core; smaller local networks are also centered around Waltham, Lynn, and Quincy. The system also includes longer routes serving less-dense suburbs, including several express routes. The buses are colored yellow on maps and in station decor. Most routes are directly operated by the MBTA, though several suburban routes are run by private operators under contract to the MBTA.
alt=|left|thumb|A typical New Flyer XDE40 Hybrid bus The MBTA bus system, the nation's sixth largest by ridership, has 152 bus routes Most routes provide local service in the urban core; smaller local networks are also centered around Waltham, Lynn, and Quincy. The system also includes longer routes serving less-dense suburbs, including several express routes. The buses are colored yellow on maps and in station decor. Most routes are directly operated by the MBTA, though several suburban routes are run by private operators under contract to the MBTA.