A470 Abercynon Roundabout

Layout and signage

Aberpennar
Mountain Ash
Aberdâr
Aberdare
A4059
Ystrad Mynach A472
Aberfan (A4054)
  A4059     A4054
A472
A4054
  Ystrad Mynach A472
Aberfan (A4054)
Aberdâr
Aberdare
A4059

Lane configuration

LanesLanesLanesLanes

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

LanesLanesLanesLanes

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

Other events

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

In this section

What's new

Red, white and blue

Kent County Council is run by eurosceptic nationalists. So why are they putting EU flags on their road signs?

The sunlit uplands

On Saturday 31 May something historic happened. The Heads of the Valleys Road was finally complete.

Grand openings

Our much-loved Opening Booklets section has two new publications for you to explore, and we’re making some overdue changes to make them easier to find and easier to read.

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Linnyshaw Moss

The UK's widest motorway is not where you might expect to find it — in fact, it's on the unassuming M61 near Manchester. This gallery offers an overhead view of one of the UK's most unique and spacious interchanges.

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