Reduced speed limits coming soon to Rochester streets Rochester Public Works is preparing signs to mark reduction of speeds to 25 mph on most residential streets. Written By: Post Bulletin staff reports | 3:14 pm, Apr. 7, 2021 × A speed-limit sign alerts drivers on Tuesday, August 18, 2020, along 11th Avenue Northeast in Rochester. (Traci Westcott / twestcott@postbulletin.com) Speed limit changes are looming for Rochester. Signs on the edge of the city marking the shift from 30 mph to 25 mph for most of Rochester's residential streets are expected to be posted in May, which will spur the citywide change. The change follows a December decision by the Rochester City Council, which was a compromise up from a 20 mph recommendation.