More than a mile of traffic has built up on the M1 close to Wakefield this morning.
Heavy traffic has been reported on the southbound M1 at Junction 41, East Ardsley.
One witness suggested that traffic had been held due to a stranded vehicle, but said that police were on the scene.
Pictures from Highways England show heavy traffic on the southbound carriageway.
Google Maps is reporting around 10 minutes of delays.