A push or padelled trolley may be put on line with the permission of Station Master on duty and without blocking the line unless forbidden under special instruction. The qualified person in charge of the trolley shall,-
(i) ensure that sufficient margin is available between trains and for that he has ascertained the whereabouts of all approaching trains;
(ii) ensure that the visibility is clear so that trolley can be easily lifted off the track on sighting a train, or when clear view is not obtainable for an adequate distance due to geography and curvature of the track in the section, even if the weather clear, or visibility is impaired due to tempestuous weather take precautions for protection of his trolley, in both directions on single line and in the direction from which trains may approach on a double line in accordance with sub-rule (2) of the rule 259 below.