The Lowell Regional Transit Authority (LRTA) is a public, non-profit organization in Massachusetts, charged with providing public transportation to the Greater Lowell area. This primarily includes the city of Lowell and the towns of Billerica, Burlington, Dracut, Chelmsford, Tewksbury, Tyngsborough, Westford and Wilmington. The LRTA provides fixed route bus services and paratransit services within this area, although some fixed lines do extend beyond these towns.