Boston's default speed limit drops to 25 m.p.h. on Jan. 9, Mayor Walsh's office announced today.
The reduction from 30 m.p.h. does not apply to state-owned roads, including parkways, highways and Gallivan Boulevard.
Walsh's announcement came not long after the City Council approved, for the second time, a measure allowed under a new state law to drop city speed limits from 30 m.p.h. to 25 m.p.h.
The council had approved the measure two weeks ago, but added an amendment seeking authority to reduce the speed limit to just 20 m.p.h. in certain zones, such as in front of schools. Walsh rejected the council action after learning the city already had the authority to do that and the council passed an unmodified measure today.
City officials say the lower speed limit will make local roads safer for motorists, pedestrians and bicyclists.