Engineers are fixing a traffic light power outage in Preston.
Lancashire police received several calls at 8.05am saying the traffic lights at the junction between Blackpool Road and Garstang Road in Preston were not working.
But Lancashire County Council is responsible for the highways and the council was only notified later.
An LCC spokesman said: “We were only notified recently.
“An engineer is at the scene trying to fix the problem now.
“I’d urge people to call us if they spot a problem on the highways so we can deal with incidents like this quicker.
“Don’t leave it up to another driver, report it to the council.”
If you spot a problem on the highways call: 03001236701