M4 J46 Llangyfelach Interchange

Layout and signage

Llangyfelach
Felindre
B4489
      A48
B4489
A48
  Llangyfelach
Felindre
B4489

Lane configuration

LanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.

LanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.

In this section

What's new

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.

Hello, here's my ridiculous side project

An introduction to what I write, and why I write it, and where my strange new road sign simulator fits in to all this.

London, in a new light

It was specially designed never to be noticed. And now it's disappearing, nobody has noticed its absence. It's London's own bespoke street light.

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Have you seen...

Gateshead Highway

The unloved and unfinished Gateshead Highway is due to be demolished. Take a look at the road that Gateshead can't wait to get rid of.

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