es), dragging equipment, excess dimensions, shifted loads, high water and (rock or earth) slides.
A method of authorising movements of trains or engines or protecting men or machines on a main track within specified limits in territory designated by special instructions or general order.
An engine, or more than one engine coupled, with or without cars, displaying a marker and authorised to operate on a main track.
A book of forms used at designated stations for registering time of arrival and departure of trains, and such other information as may be prescribed.
A switch, designated by letter “V” or bowl painted yellow, when trailed through the switch points remain lined in the position to which forced.
A system of tracks, other than main tracks and sidings, used for making up trains, storing of cars and for other purposes.
A portion of the main track, designated by yard limit signs and timetable, train order Form T, or track bulletin, which trains and engines may use as prescribed by Rule 93.
An engine assigned to yard service.