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They have mechanical features that reduce slack in normal operation and prevent telescoping in derailments, yet remain compatible with other Janney types used by North American freight railroads. Like all Janney couplers, the Tightlock is "semi-automatic".
The link-and-pin coupling was the original style of coupling used on North American railways. After most railroads converted to semi-automatic Janney couplers, the link-and-pin survived on forest railways. While simple in principle, the system suffered from a lack of standardisation regarding size and height of the links, and the size and ...
Major Eli Janney, a Confederate veteran of the American Civil War, invented the semi-automatic knuckle coupler in 1868. It automatically locks the couplers on cars or locomotives together without a rail worker having to get between the cars, and replaced the link and pin coupler, which was a major cause of railroad worker injuries and deaths ...
Scharfenberg-type semi-automatic couplers on modern EMUs, DMUs and some passenger rolling stock: Dellner in General San Martín Railway and General Bartolomé Mitre Railway on 1,435 mm track gauge; Shibata semi-automatic couplers on EMUs made by Toshiba-Marubeni Corp. 1956 D.F. Sarmiento Railway on 1,676 mm track gauge,
After American rolling stock became more common under the Manila Railroad during the late 1920s, Janney couplers were adopted as the standard, and were first adopted on the locally-assembled RMC class railcars of 1928. World War II-era and post-war locomotives such as the Manila Railroad 800 class of 1944 only use
Much like BART, Washington Metro trains also have a rotary switch to allow the driver to switch between automatic and manual operation. Control panel of a Tokyo Metro 10000 series train, which has a green lever to allow the driver to switch between different modes of operation. Two white ATO start buttons are also placed beside the master ...
There are two main types of signaling aspect systems found in North America, speed signaling and weak route signaling. [citation needed] Speed signaling transmits information regarding how fast the train is permitted to be going in the upcoming segment of track; weak route signaling transmits information related to the route a train will be taking through a junction, and it is incumbent upon ...
In 1992, the American Association of Railroad Superintendents (AARS) convened a special committee, which suggested to its board of directors, executive council, and membership that “the AARS sponsor a full conference on the standardization of railroad operating rules, practices, and procedures, and that this conference be conducted on the ...