Police are dealing with an incident on the A1 southbound sliproad with the A19 at Seaton Burn Roundabout in Seaton Burn, north of Newcastle.
It's thought there was a collision between two vehicles that happened around 3.30pm on Sunday.
One man has been injured although the extent of injuries his are not yet known.
The sliproad is currently closed and is expected to be closed for some time while enquiries are carried out into the collision.
A Northumbria Police spokesman said they were keen to trace a black Citreon C2 car which was in the area at the time.