Federal Websites:

• US Department of Transportation (DOT)
• Manual on Traffic Control Devices (MUTCD)
• American Association of State Highway and Transportation Officials (AASHTO)
• Institute of Transportation Engineers (ITE)
• Highway Capacity Manual (HCM)

State Websites:

• Executive Office of Transportation and Construction: Responsible for developing, implementing and coordinating transportation policies and projects in Massachusetts.
• Massachusetts Bay Transportation Authority (MBTA): The nation's oldest mass transit system serving the Boston metropolitan region.
• Massachusetts Highway Department (MassHighway): Responsible for the design, construction and safe operation of all state highways and bridges in Massachusetts.
• Massachusetts Highway Department Project Development and Design Guide
• Massachusetts Executive Office of Transportation
• Massachusetts Environmental Policy Act Office
• Route 3 Construction
• Massachusetts Port Authority: Responsible for promoting and managing the state's airports and seaports. Operates Logan International Airport.
• Massachusetts Turnpike Authority: Operates the Mass Turnpike, the Turnpike Extension and the Boston Harbor crossings (Callahan, Sumner and Ted Williams tunnels).

Regional/Local Websites:

• Northern Middlesex Council of Governments (NMCOG): The Northern Middlesex Council of Governments (NMCOG) works with the communities of the Greater Lowell region to support and enhance a wide range of land use planning objectives.  

• Lowell Regional Transportation Authority (LRTA)

• Boston Metropolitan Planning Organization (MPO): One of 13 regional agencies established to carry out federally funded transportation plans and programs in Massachusetts.

• Massachusetts Bicycle Coalition: advocates for bikeways and bicycle safety programs.
• City of Lowell Parking Department

Other Websites:

• Walkable Communities
• Traffic Calming - FHWA
• Traffic Calming Encyclopedia