M6 motorway
The M6 motorway is the longest motorway in the UK, running for just over 230 miles from the English Midlands to the Scottish border. It begins at junction 19 of the M1 and the western end of the A14 at the Catthorpe Interchange, near Rugby before heading north-west. It passes Coventry, Birmingham, Wolverhampton, Stoke-on-Trent, Liverpool, Manchester, Preston, Lancaster and Carlisle before terminating at junction 45 near Gretna. Here, just short of the Scottish border it becomes the A74(M) which continues to Glasgow as the M74. Its busiest sections are between junctions 4 and 10a in the West Midlands, and junctions 16 to 19 in Cheshire; these sections have now been converted to smart motorways.

It incorporated the Preston By-pass, the first length of motorway opened in the UK and forms part of a motorway "Backbone of Britain", running north−south between London and Glasgow via the industrial North of England. It is also part of the east−west route between the Midlands and the east-coast ports. The section from the M1 to the M6 Toll split near Birmingham forms part of the unsigned E-road E 24 and the section from the M6 Toll and the M42 forms part of E 05.
Q19875
M1
LOC
Q4648884
A14
LOC
Q5054086
Catthorpe Interchange
LOC
Q894091
Rugby
ORG
Q6225
Coventry
LOC
Q2256
Birmingham
LOC
Q126269
Wolverhampton
LOC
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Stoke-on-Trent
LOC
Q24826
Liverpool
LOC
Q18125
Manchester
LOC
Q184090
Preston
LOC
Q205905
Lancaster
LOC
Q192896
Carlisle
LOC
Q2282115
Gretna
LOC
Q1346172
A74(M)
Concept
Q4093
Glasgow
LOC
Q4677594
smart motorways
UNK
Q7241840
Preston By-pass
LOC
Q84
London
LOC
Q4093
Glasgow
LOC
Q458051
M6 Toll
LOC
Q2256
Birmingham
LOC
Q106123
E-road
LOC
Q1375832
E 24
LOC
Q1328487
M42
LOC
Q693493
E 05
LOC
Q1881041
M6 motorway
LOC
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6
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