Roman 4 lane highway discovered

[kernals12]

During archeological excavation for the High Speed 2 Raul project in Britain, they discovered the remains of a Roman settlement including a road that is twice as wide as normal Roman Roads, a 4 lane highway.

https://www.express.co.uk/news/science/1548297/archaeology-breakthrough-hs2-dig-roman-town-dual-carriageway-northamptonshire

[Road Hog]

Was it a motorway or an A (M) road?