Cambridge, Somerville, Brookline, and Boston are participating in a “Rolling Launch Party” Wednesday to celebrate the expansion of the Hubway Bicycle Share system.
Festivities will start with ribbon-cutting ceremonies in Brookline and Somerville before speeches by officials at Cambridge City Hall and a lunch celebration in Harvard Square.
From noon to 1 p.m, Boston Bikes will give away free helmets to the first 25 people using bikes or carrying a Hubway key at a new Boylston & Washington Street Station; a second helmet giveaway is planned at the new South Bay Plaza Station in Dorchester at 4:30 p.m.
By the end of the year, the four communities will have 47 new locations, with a total of 111 stations and 1,100 bicycles.
