They still exist officially, but their initial routes have changed since their introduction in 1957.

It has rock so easy for initial routes that every time you reach up there's a hold.

Three initial routes were planned, to north, south and east Leeds:

Their initial route to market was through call centre automation.

The initial route was designed to make various necessary stops on the way.

A second phase contract was subsequently signed in July 2006 and includes extensions to the initial routes.

Construction of the initial route was completed in 1932.

Nodes meet at the root of the tree to establish an initial route.

On the opening of the initial route several other problems were raised.

Only three of the 27 miles of its initial route in 1973 are still in place today.