(1) In order to indicate to the staff that a train is complete, the last vehicle, shall be distinguished by affixing to the rear of it,- 232 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(i)]
(a) a red retro-reflective painted sense and brake unit to the rear of it having a flashing red lamp which is lit both by day and night as given in sub-rule (2) of rule 160; or
(b) (i) by day, a tail board of approved design or a red painted tail lamp of approved design which may be unlit; or
(ii) by night, as well as in thick, foggy or tempestuous weather impairing visibility during day, a flashing red tail lamp of approved design;
(c) Such other device as may be prescribed by special instructions.
(2) Working of trains with a red flag as a last vehicle indicator- except in case of front portion of a parted train, no train shall be worked in the block section without the tail board or tail lamp as prescribed under these rules. In emergencies only, and under special instructions in each case, a red flag may be used in lieu of a tail board or unlit tail lamp.
(3) In case of a locomotive or coupled locomotives running light, they shall have a red flag by day and marker lights lit as red (after covering it with red slides) by night to indicate the last vehicle.