Foreword
1 Scope
2 Normative references
3 Terms and defintions
4 Signalling relays and circuit diagrams
5 Electrical supply to railway signalling apparatus
6 Other apparatus
7 Nomenclature for circuit diagrams
Annexes
Annex A (informative) - Examples of written circuits
and wiring symbols
Annex B (informative) - Labelling wires
Bibliography