The work has now started to upgrade the safety barrier on the A1(M), which is expected to make journeys much safer for drivers. The renovation will see the steel barriers in the central reservation between junctions four and five, north of Hatfield, replaced with a new concrete road barriers. Then while the work is carried out, on both carriageways, lane three will be closed 24 hours a day over a stretch of just over a mile between the junctions. There will be a temporary speed restriction of 50mph and traffic will run on the hard shoulder, with three narrow lanes. Paul Robinson, Highways Agency Asset Manager, said: This work will improve safety on this section of the road. Concrete barriers are extremely strong, and significantly reduce the risk of vehicles crossing over onto the opposite carriageway in the event of a collision, providing safety benefits and helping us to keep traffic moving. The work is due to be complete by early June 2012.

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