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In train order operation, a "train order" is an order issued by or through a proper railway official to govern the movement of trains". [1] Train order operation was widely used by the railroads of North America before the days of centralized traffic control (CTC), direct traffic control (DTC), and the use of track warrants conveyed by radio.
North American railroad signaling. Standards for North American railroad signaling in the United States are issued by the Association of American Railroads (AAR), which is a trade association of the railroads of Canada, the US, and Mexico. Their system is loosely based on practices developed in the United Kingdom during the early years of ...
Also Centering spring cylinder. A cylindrical cast-iron holder in which an adjusting string is placed. Adjusting spring seat A casting, or a part of the bolster of a two-wheel trailing truck, forming a bearing for the end of the adjusting spring. Admission The opening of steam port to admit steam to one end of a cylinder. If the valve has no lead, admission takes place at the moment the piston ...
A brakeman manually activated brakes on railroad cars before the advent of air brakes. Brakeman's caboose (US) A small hut at one end of a railway wagon to protect the brakeman from the elements. Buda Car. A type of inspection car or speeder, typically streamlined, manufactured by Buda Engine Co.
North American signals are commonly of three types. Absolute – Absolute signals are usually connected to an interlocking controlled by a block operator or train dispatcher. Their most restrictive aspect is "stop" and trains cannot pass them at stop unless they obtain special authority.
Operation. Semaphore signal levers inside train dispatcher's room of Cianjur railway station. These levers are connected to the signal by pairs of wires. Worldwide, the first semaphore signals were controlled by levers situated at the signals. Some early signals protruded from the roof of the controlling signal box.
A Cancelled-to-order plate block of the US newspaper boy stamp of 1952. A cancelled to order (also called and abbreviated CTO) postage stamp, philatelic symbol , [1] is a stamp the issuing postal service has cancelled (marked as used), but has not traveled through the post, [2] but instead gets handed back to a stamp collector or dealer.
The crossovers to the south and north of the station can be used to terminate trains if there is an obstruction (e.g. broken down train) ahead. In the early 2000s there were a few trains a day timetabled to terminate at Ingleburn, but these have since disappeared from the timetable.