Updated Jan. 4 at 10:35 a.m.
The traffic lights are back up and running, according to Greater Sudbury Police.
Original story:
The traffic lights are out at the intersection of Elm and Lloyd streets, Greater Sudbury Police said on Twitter at 10:13 a.m. Thursday.
Officers are on scene for traffic control at the busy downtown intersection.
"Reminder, when traffic lights are out, motorists are to treat intersection as a four-way stop," police said in a tweet.