Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

JLE signals: what went wrong London Underground wanted to pioneer moving block signalling technology on the Jubilee Line Extension. As a result the project is running more than 12 months late. Antony

London Underground's Jubilee Line Extension is in a difficult situation. It is the victim at best of over-inflated productivity claims by its signalling contractor; at worst of an over-optimistic desire to push the realms of known technology.

Subscribe for full online access and get...

  • Full, instant access to all stories
  • Customised email alerts straight to your inbox
  • Monthly print magazine

Register for guest access to keep reading and get..

  • A free taste of other selected news stories
  • Daily email newsletters

Already have a subscription or ICE membership? or