Several people have been injured after a crash on the M62 motorway involving four lorries and a car, police have said.
Emergency services were called to the incident - near the border of West Yorkshire and Greater Manchester - at about 14:30.
One casualty was taken to hospital, the Yorkshire Air Ambulance service said.
Motorists also faced 90-minute delays and were advised to follow diversions and avoid the area.
The crash led to the motorway being closed in both directions between junctions 20 and 24, but the westbound carriageway has since reopened.
A spokesperson for West Yorkshire Police said officers were working with Highways England to clear the motorway.
The force said it had also launched an investigation into the cause of the crash and has appealed for anyone with dashcam footage to get in touch.
Police and firefighters from Greater Manchester and the Yorkshire Air Ambulance service were sent to the scene of the incident on the eastbound carriageway close to Rishworth.
The crash caused more than five miles (8km) of congestion, according to Highways England.