The railway servant concerned with the operation of points and signals shall not, while on duty, leave the place of operation of points and signals which are under his charge un-attended.
If he has to leave his station office or cabin for a short duration for any unavoidable or compelling reason, he shall lock the instrument of granting or obtaining line clear, signalling equipment and unless a railway servant is present, lock his office also. If the duration of absence is likely to be significant, he shall also inform the controller.
CHAPTER V General A. Systems of Working. - All trains working between stations shall be worked on one of the following systems, namely:-
(1) Absolute Block System;
(2) Automatic Block System.
188 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(i)] B. Applicability of General Rules referring to the working of signals and trains.- All rules referring to the working of signals and trains shall apply to the systems of working detailed in these rules, except where otherwise provided.
THE ABSOLUTE BLOCK SYSTEM A - Essentials