Police have been called to two collisions on each carriageway of the A27 between the junctions for the Eastern Road and Hilsea.
Officers are en route to the collisions, which involved four vehicles on the westbound carriagaway, and two on the eastbound carriageway.
It is not thought the collisions are serious.
Meanwhile, one lane closed due to accident on A27 westbound between the A3(M) at the A2030 Havant Road and B2177 Bedhampton Hill Road turnoffs and the M27.
More information as we get it.