M1 reopens after two-lorry crash in Derbyshire
The M1 northbound has reopened after a crash involving two lorries closed it at the height of the morning rush hour.
The accident happened at about 03:40 BST, when a lorry struck another lorry which had broken down on the outside lane in north Derbyshire.
One lorry driver was taken to Northern General Hospital in Sheffield, where he is said to be in a critical condition.
The road was closed between junction 29 at Chesterfield and junction 30 at Sheffield for 10 hours.
Police said the lorry driver, a 48-year-old man from Derby, suffered "life-threatening" injuries.
The driver of the second lorry was not hurt.
Sgt Adrian Pitfield said the motorway remained closed for so long because of the "significant amount" of damage to the vehicles and debris and oil spread over both carriageways.