M8 J22 Plantation Interchange

Layout and signage

East Kilbride
Carlisle
M74 Link
Tradeston (A8)
Kinning Park
      M77




  Kilmarnock
Prestwick Airport
M77 Link

Lane configuration

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LanesLanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 exits and does not return.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.
  • Then further along:
  • Lane 1 continues ahead.
  • Lane 2 continues ahead.
  • Lane 3 is gained from the entry sliproad.
  • There is a barrier between lanes.
  • Lane 4 is gained from the entry sliproad.
  • Lane 5 continues ahead.
  • Lane 6 continues ahead.

LanesLanesLanesLanesLanesLanesLanesLanesLanesLanes
LanesLanesLanesLanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • There is a barrier between lanes.
  • Lane 4 exits and does not return.
  • Lane 5 continues ahead.
  • Lane 6 continues ahead.
  • Then further along:
  • Lane 1 continues ahead.
  • Lane 2 continues ahead.
  • There is a barrier between lanes.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

In this section

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The road that made no sense

It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.

The forever bottleneck, part 2

The second part of the story, where we learn why exactly the M4 gets narrower on the final approach to Europe’s biggest city.

The forever bottleneck, part 1

The M4 into London was one of the UK's earliest and most ambitious motorway projects. It was bold, pioneering... and almost instantly regretted.

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