what was the speed limit on the m1 when it first opened
M1 motorway The first section of motorway was the Preston Bypass in Lancashire, which opened in 1958 (now part of the M6 motorway).[3] The M1 was Britain's first full-length motorway and opened in 1959.[5] The early M1 had no speed limits, no central reservation or crash barriers, and no lighting.[6]