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.
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.
The A1(M) northbound has been closed at Junction 4, near Hatfield, following a serious traffic incident involving a child.
One lane of the A1(M) at Junction 6 for Welwyn is currently closed due to a vehicle fire.
Two lanes of the A1(M) are closed southbound after a four-vehicle crash in the Hatfield Tunnel this morning.