News Flash

Transportation & Public Works - News

Posted on: July 1, 2021

City Installs Traffic Signal Battery Backup Systems


The City of Santa Rosa is currently retrofitting 170 signalized intersections with Battery Backup Systems (BBS) to provide more than four hours of uninterrupted power to traffic signals during a power outage which will help better facilitate an evacuation process and movement of traffic during an emergency. This project was made possible through the FEMA Hazard Mitigation Grant Program where the City was successful in securing $1.4 million in funding.

Recent wildfires and Public Safety Power Shutoffs have highlighted the need to maintain established evacuation routes through the City. When traffic signals lose power, intersections become four-way stops, dramatically slowing evacuations and increasing driver uncertainty. Maintaining power to signals at critical traffic routes improves public safety by ensuring orderly evacuations and reducing the number of police officers needed for traffic control or accident response.

Battery Backup Systems not only provide uninterrupted backup power for traffic signals during a power outage, the BBS also provides power for vehicle, bicycle and pedestrian detection devices and pedestrian crossing signals.

Another important feature is the battery backup system’s ability to maintain the memory of the traffic signal controller. The controller is responsible for sequencing the phases of the various turn movements through an intersection. With a battery backup system, the controller’s memory can be maintained and return to normal operation once the outage has ended. This feature will eliminate the need to spend additional time reprogramming controllers after a power outage.

In 2011, City Traffic and Electrical divisions first began deploying BBS at select signalized intersections in anticipation of the SMART train. Installation for the current BBS project began in April 2021 and completion is expected by the end of July 2021.

Additional information and the project map can be found at 

Facebook Twitter Email

Other News in Transportation & Public Works - News

NF_Youth Free Summer 2023

Youth Ride Free in Summer 2023

Posted on: May 16, 2023
News Flash_2023 Merit Awards

2023 Merit Awards

Posted on: April 8, 2023
CityBus Electric Bus Ribbon Cutting

City to Launch Four New Electric Buses

Posted on: December 22, 2022
Zero Waste Holiday Resolutions

Zero Waste Holidays: New Year Resolutions

Posted on: December 13, 2022
Zero Waste Holiday Entertaining

Zero Waste Holidays: Entertaining Tips

Posted on: December 1, 2022
NF_Break Out the Rake

Break Out the Rake!

Posted on: October 26, 2022
NF_Leaf Season 1

Where You Leave Your Leaves Matters!

Posted on: October 20, 2022
NF_Ride Fare Free Today v2

Ride CityBus Fare-Free Today

Posted on: September 6, 2022
NF_Zero Waste Week

2022 North Bay Zero Waste Week

Posted on: June 30, 2022