Schnieder, E.:
Train and Railway Operations Control.
Knowledge for sustainable Development - An Inside into the Encyclopedia of Life Support Systems.
UNESCO Publishing-Eolss publishers, Paris, France, Oxford, UK, 2002.
The main subject of train and railway operations control is to ensure the safe transport of people and goods, to their respective destinations. This goal requires control of trains and tracks in a way that will ensure protection against forbidden states. This task can be described in three hierarchical control layers: - the control of a given train on a given track - the control of multiple trains on a given track - the network control of multiple trains on multiple tracks.