By Jonathan Prynn, September 7, 2015

It is the unloved Underground line more prone to delays than any other.
Now a firm of London architects has come up with a radical solution to the Circle line’s problems — replace it with a high-speed travelator.
The team behind the idea claim that a three-lane moving walkway through the line’s 17-mile circuit could shorten journey times, boost capacity threefold and improve

Passengers would step from “feeder” walkways moving

NBBJ researchers calculate the travelator would allow up to 55,000 people to use the Circle line at any one time.
Britain’s first travelator was installed at Bank station 55 years ago. In Paris, a “trottoir roulant rapide” opened at Montparnasse station in 2002, moving at 6mph over 180 metres. It was slowed to 3mph after a spate of accidents
