Emergency services are at the scene of a collision on the Hunters Bar roundabout in Sheffield this afternoon.
An ambulance is at the scene, where eyewitnesses say a woman is receiving treatment.
It is reported that an elderly woman was involved in a collision with a taxi.
A man at the scene at the time of the collision said the traffic lights at the roundabout were not operating.
They have been out of action for a number of days.
Nick Marriott, highway electrical operations manager at Amey said: "The traffic signals on Hunter’s Bar roundabout have been out of order following a recent road traffic accident that wrote off the signal’s control unit.
“Amey Streets Ahead are working to replace the control unit as quickly as possible and in the meantime, have installed temporary pedestrian crossings.”