A40 Pencraig Speed Limit Change

Junction number





Pencraig Speed Limit Change


Speed limit change


Not a terminus

Other routes



National Highways

Restricted turns

Full access


No services

Layout and signage


Other events

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

In this section

What's new

Imperfectly Odd: Batheaston Bypass

It has viaducts, a tunnel and plenty of controversy, but the amazing Batheaston Bypass doesn’t really work. What went wrong?

South London's lost motorways

Completing the story of London's epic Ringways, we've just published the Southern Radials, five more motorways that never saw the light of day.

To the north east!

Two new additions to our collection of Opening Booklets take us to Darlington and Middlesbrough.

Share this page

Have you seen...

To the Limit

Speed limits are more emotive and divisive than almost anything else about the road network. How do you sort the fact from the opinion? And how did we end up with the speed limits we have?

About this page

Published22 April 2017

Last updated17 May 2022