A6144(M) motorway ceased being a special road on 25 May 2006 losing its motorway status. It is now subject to a 50 mph (80 km/h) speed limit and is classified as the A6144. The road through Sale retained the A6144 number, meaning that there are two branches (and two junctions with the M60 motorway) with the same road number. Despite losing motorway status, the road still prohibits pedestrians, cyclists, and horse riders. Following the change of signage on 25 May 2006, two marker posts, the A6144(M) confirmation sign and a lay-by warning sign are privately preserved. A6144(M) motorway The A6144(M) was a
A1(M) motorway Barton to Washington section with the Darrington to Leeming Bar section, forming the longest A1(M) section overall and reducing the number of sections from five to four. There has been a proposal to renumber the section of A1(M) to M1 between Micklefield to Washington, making this section a northern extension of the M1. From London to Sunderland, 123.33 miles of the route are non-motorway while the remaining 145.38 miles are to motorway standards. The motorway sections are discussed below. This section opened in stages: This section which runs though the Cambridgeshire countryside between Alconbury and Peterborough first opened in 1998