This is not a complete list as more cities are making the conversion every month:Amherst, Chelsea, Natick, Weston, Arlington, Dartmouth, New Bedford, Westwood, Bedford, Fairhaven, Newton, Winchester, Boston, Fitchberg, Randolph, Winthrop, Brookline, Greenfield, Salem, Woburn, Cambridge, Hamilton, Sharon, Cape Cod (20 towns), Haverhill, Shirley, Chelmsford, Holyoke, Watertown