The Massachusetts Department of Transportation - Developers Page
The Massachusetts Department of Transportation (MassDOT) Developers Page serves as a resource for developers interested in working with real-time and static transportation data made available by MassDOT.
Data sets are available from a range of sources, including from the Massachusetts Registry of Motor Vehicles, the Massachusetts Port Authority, Massachusetts Regional Transit Authorities, The Massachusetts Ferry Service, & from private bus carriers. Data types include Real-time Travel Times (RTTM), roadway events, 511 traffic cameras, bicycle data, and more.
The MassDOT Developers Page: http://www.massdot.state.ma.us/DevelopersData.aspx