A woman in her 20s has escaped with no injuries after her car overturned on the A1(M) this morning (Sunday).
The accident, which happened at around 9.30am, was on the southbound of the motorway at Letchworth GC prior to the exit slip road at junction 9.
Motorists have been advised to expect delays.
An air ambulance was also called this morning after a man was reported to have had breathing problems.
The air ambulance landed on Purwell Primary School, Hitchin, as a precaution.
The man was later taken to Lister Hospital by land ambulance.
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