The Altstetten operator's view, using the ILTIS traffic control system, of the trackage outside his window

North is roughly down; Zurich is to the left and Dietikon to the right

Track sections in red are occupied and those in green are reserved by a train; its number appears in the same color. (Sections in white are unreserved.) With the ILTIS system, the Altstetten operator can set up routes for trains, and temporarily put track sections out of service, as required.

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