Traffic lights on Highway 60 were out of service for the whole weekend due to a storm on Friday night.
The lights at Kawartha Dairy in Huntsville went into flashing mode when the power was lost.
The lights are now running after a maintenance contractor returned Monday morning to replace load switches and reset the monitor lights.
The Ministry of Transportation would like to remind drivers that when a traffic light outage happens. A flashing red light means drivers must come to a complete stop at the intersection. A flashing yellow signal means approach with caution.