A12 road

The A12 is a major road in England. It runs north-east / south-west between London and the coastal town of Lowestoft in the north-eastern corner of Suffolk, following a similar route to the Great Eastern Main Line. A section of the road between Lowestoft and Great Yarmouth became part of the A47 in 2017. Between the junctions with the M25 and the A14, the A12 forms part of the unsigned Euroroute E30 . Unlike most A roads, this section of the A12, together with the A14 and the A55, has junction numbers as if it were a motorway.

The 84 km section of the A12 through Essex has sections of dual two lanes and dual three lanes, with eight changes in width between the M25 to Ipswich. It was named as Britain's worst road because of "potholes and regular closures due to roadworks" in a 2007 survey by Cornhill Insurance. The A12 is covered by Highways England's A12 and A120 Route Management Strategy.

Wikipedia