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The system was developed in the 1920s by the General Railway Signal Company as an improvement on existing mechanical train stop systems and saw limited adoption before being overtaken by more advanced cab signaling and automatic train control systems. The system remains in use after having been introduced in the 1920s.
Advanced Civil Speed Enforcement System; Advanced Train Control System; ALSN; Anti-collision device; ATACS; Automatic train control; Automatic train protection; Automatic Train Protection (United Kingdom) Automatic train stop; Automatic Warning System; Automatische treinbeïnvloeding
Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...
Safetran Systems Corporation was an American company that manufactured switch machines, railroad wayside signal systems, rail transit signaling and rail-highway level crossing active warning systems. [ 3 ]
GRS was focused on railway signaling equipment, systems and services. The company was established in 1904 and became part of Alstom Transport in 1998. GRS was a member of the Dow Jones Industrial Average from 1928 to 1930. [2]
This is a list of current semi-automatic train systems capable of GoA2 as according to the Grade of Automation classifications specified by the standard IEC 62290‐1. These are explained diagrammatically by the UITP. For the systems capable of GoA3 and higher, see the list of driverless train systems.
Eventually known as train stops or trip stops, the first mechanical ATS system was installed in France in 1878 with some railroads in Russia following suit using a similar system in 1880. [citation needed] In 1901 Union Switch and Signal Company developed the first North American automatic train stop system for the Boston Elevated Railway.
Communications-based train control (CBTC) is a railway signaling system that uses telecommunications between the train and track equipment for traffic management and infrastructure control. CBTC allows a train's position to be known more accurately than with traditional signaling systems.
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