M4 J49 Pont Abraham Roundabout

Layout and signage

N/A   A48


A483










      Services Pont Abraham
Caerfyrddin — Carmarthen
A48
Rhydaman — Ammanford
Llandeilo
A483
Pontarddulais
A48

Lane configuration

LanesLanesLanesLanes

  • Lane 1 continues ahead.
  • Lane 2 continues ahead.

LanesLanesLanesLanes

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

Other events

  • Signs Start of motorway regulations
  • Signs End of motorway regulations

In this section

What's new

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.

Silver bullet

The Silvertown Tunnel is finally open for business. One question remains: what’s it for?

Share this page

Have you seen...

Rainbow Signals

The annual London Pride event was accompanied, in 2016, by some quite unusual changes to traffic lights around Trafalgar Square. The green men went missing — and seven new symbols took their place.

About this page

Published

Last updated