The Roads Policing Unit (RPU) were called to the northbound carriageway, between junction 44 at the A64 and junction 45 at Boston Spa, at about 6am. All traffic was held while officers cleared a "large amount" of debris from the road, which was scattered across all three lanes. Traffic was released again by 7am, but Highways England warn that at least six miles of queues have now built up back to the M1 juncton. Drivers are warned to add at least 45 minutes onto their journey times. The RPU tweeted a picture of the debris and said: "A1 North J44 to 45. "Long delays due to vehicle debris and contents across all three lanes. "Highways England on scene and carriageway being cleared asap."