M8 J25 Cardonald Interchange

Layout and signage

Clyde Tunnel
A739
  A739     A739



  Clyde Tunnel
A739

Lane configuration

LanesLanesLanesLanesLanesLanes

  • Lane 1 exits and does not return.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

LanesLanesLanesLanesLanesLanes

  • Lane 1 is gained from the entry sliproad.
  • Lane 2 continues, with option to exit.
  • Lane 3 continues ahead.
  • Lane 4 continues ahead.

Other events

  • Signs 50mph speed limit begins
  • Signs National Speed Limit begins

In this section

What's new

Where did the M25 come from?

London’s notorious orbital motorway turns 40 years old today. Where did it come from - and why the number “25”?

The long way round

When a road is closed, why isn't the diversion route just the quickest way past the closure?

Signs and sensibility

The one great attempt to make London’s streets logical - and how one retired chauffeur’s favourite routes changed the way you get around the capital.

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Croydon Ring Road

Common sense suggests that you shouldn't be able to spend so much money on heavy engineering and end up with such a terrible road system.

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