Drivers faced delays of up to two hours on the M27 earlier today after an accident involving five cars and a motorbike near Portsmouth.
The crash happened shortly before 7am between junctions 11 and 12 of the eastbound carriageway, blocking two lanes.
By 9am Hampshire Constabulary had handed over to Highways Agency, who has re-opened both lanes after clearing an oil spillage.
Queues were slow to clear, with Romanse traffic managers warning commuters that they could still experience delays of two hours from junction 8.
Traffic also moved slowly on the westbound carriageway from the M27 and A3(M), while diverted cars are causing tailbacks on the A27 between Segensworth and Fareham.
South Central Ambulance Service said it was called at 6.56am to five cars and an motorcycle.
A spokesman said the motorcyclist had suffered neck, arm and leg injuries and that two other people had minor injuries.
He said that three ambulances, two rapid response vehicles and a hazardous area response team were at the scene.