A £600,000 study is being launched on how to improve the A1 in the East of England,
Highways England has appointed the engineering firm Arup to carry out the study into improving the A1 from its junction with the M25 to Peterborough, particularly the non-motorway section linking the two parts of the A1(M) to motorway standard.
Arup will review the existing evidence and prepare a case to consider further investment on the A1.
The study is due to be completed by the end of 2016.
It forms part of the Department for Transport's Road Investment Strategy.
It is one of six studies taking place that will look at the the biggest challenges facing the strategic road network in England.