Two lanes are closed on the A1(M) after a crash involving four cars between Welwyn and Stevenage this afternoon.
Northbound traffic was stopped on the A1(M) last night after two crashes involving multiple vehicles near to Junction 6 for Welwyn.
A police chase which started in Buntingford ended on an A1(M) slip road near Stevenage on Monday – with a Vauxhall Corsa smashing into a stationary car waiting at a red light.
There were long delays on the A1(M) northbound this morning due to a crash near the Welwyn junction.
The A1(M) has fully reopened northbound after two crashes near Junction 2 shut the motorway this afternoon.
Motorists on the A1(M) are being warned to expect delays of up to half an hour, after an incident near Welwyn Garden City has closed two lanes of the northbound carriageway.