Computer-controlled interlocking system for a railway installation

A computer-controlled interlocking system for a railway installation which comprises a plurality of sections each of which has an associated plurality of roadway elements, said interlocking system comprising:

• a plurality of section computers for respective association with said sections, including means for fail-safe operations;
• each section computer connected to the associated roadway elements and comprising a respective program memory which is provided with programs relating to the processing of requirements for control, both individual and in relation to routes, of all the associated plurality of roadway elements independently of their presence and arrangement in the relevant section;
• each section computer also comprising a write/read memory for receiving and storing data relating to the railway installation topography and for receiving and storing data relating to the individual roadway elements in terms of element type, element program, element designation and the arrangement of the elements relative to neighboring elements;
• and
• an input computer connected in common to all the section computers, including means for fail-safe operations, said input computer including a read-only memory for storing said data relating to the railway installation topography and the individual roadway elements and to trasnfer said data to said write/read memories of the section computers during a loading phase which precedes operation of the system.