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A serious crash is causing chaos on the A1(M) this morning
An air ambulance has been scrambled to the scene after a crash between a car and a motorbike.
The motorcyclist crashed into the central reservation, police are quoted as telling the Hertfordshire Mercury, suffering serious injuries.
The road has closures between Junction 7 and Junction 4 southbound, along with the Junction 5 northbound at the slip entry.
Highways England said: “The A1M in Hertfordshire is currently closed northbound between J4 and J6 and southbound within J6 while we assist police and emergency services with a serious collision.
“Northbound traffic is being diverted via the Solid Diamond diversion symbol and should exit the A1M at J4 and take the 2nd exit towards Wheathampstead. At the next roundabout take the 1st exit and follow the B653 towards Wheathampstead.
“Turn left at the roundabout, then take the 4th exit towards Welwyn. Follow the B197 and at the next roundabout and take the 1st exit toward Welwyn. Continue straight over the next roundabout following the B656 and then continue to re-join the A1M.
“Southbound traffic is being diverted via the exit and entry slip roads at J6.”