In early 2025, wildfires swept through California, causing power outages and forcing emergency evacuations. In San Gabriel, dark intersections could have led to chaos—but the city was prepared.
The Challenge: Keeping Traffic Moving During Power Outages
As fires spread, rolling blackouts and damaged power lines, Planned Outages, PSPS, put traffic signals at risk. Without functioning signals, evacuations could slow, emergency vehicles could be delayed, and public safety could be compromised.
The City’s Solution: Backup Power for Critical Intersections
San Gabriel had recently deployed ATC+ Western Systems cabinets with built-in Alpha battery backup, ensuring continuous signal operation even when the grid failed. Real-World Advantages in Action
✓ Uninterrupted Traffic Flow: Battery backup instantly kept signals on, preventing confusion and congestion.
✓ Safe and Smooth Evacuations: Seamless power transition allowed residents and emergency responders to navigate safely.
✓ Rapid Maintenance in Crisis: Crews quickly accessed and managed equipment, ensuring continuous operation.
“Keeping intersections operational isn’t just about convenience but safety. These recent upgrades ensured smooth evacuations and clear emergency routes,” said Ricky Munoz, Signals/Lighting Technical Lead for the City of San Gabriel.
The Outcome: A More Resilient City
With backup power, San Gabriel avoided traffic chaos, allowing emergency teams to act swiftly. Reflecting on the impact, Jon Nagel, Territory Manager, Western Systems, noted: “San Gabriel’s leadership in traffic management showed in this crisis. Their proactive approach kept people safe.”
By modernizing its intersections, the city has set a precedent for resilient traffic management and proved that smart planning saves lives.