KAAL-TV Created: April 07, 2021 05:53 PM (ABC 6 News) - Speed limit changes are taking place in Rochester. The speed limit on un-posted streets will be 25 mph. For streets with a speed limit other than 25 mph, any changes take effect as soon as signage is installed. Signage installation is expected to begin in the coming weeks. The public is advised to pay attention to speed limit signage as it will likely change from what is previously posted on low volume streets. The implementation process is expected to take six months to complete. The City of Rochester is focused on an educational campaign as a part of the change.