In the middle of a huge traffic jam on Paris' Place de la Concorde, a woman has given birth to a baby girl, assisted by her husband and two traffic cops.

Officers Julie and Olivier were standing at a traffic light on their way back to the station when they noticed a man honking his horn, Le Parisien newspaper reported on Tuesday.

When they checked up, the birth was already underway.

Together with colleagues from civil protection, who happened to be stuck in the traffic chaos a few meters away, they provided first aid and guided an ambulance to the scene using their cell phones.

"In my 20-year career, this has never happened to me," Olivier told the newspaper.

"We're trained for it, but you don't think that's going to happen one day," said his colleague Julie.

The Place de la Concorde is the largest square in the center of the French capital.