On 26 April 1983, an air-side people mover system opened to link that main terminal to the (then new) circular satellite pier.
This system has since been replaced by a walkway-and-moving walkway link, although the remains of the elevated guideway are still visible.
A new operating system and shuttle cars (six Bombardier CX-100 vehicles)[4] was installed, and the guideway and transit stations were refurbished at a total cost of £45 million.
The system re-opened on 1 July 2010, two months ahead of schedule;[5][6] it featured live journey information and sensory technology to count the number of passengers at stations.
There is no connection between the two tracks, each of which hosts a single three-car train shuttling backwards and forward.