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The US and Canada departed from UK practice wherein a semaphore blade is devoted to each route (Route Signaling). General North American practice is to group routes by speeds and use a single blade for, say, "medium speed" regardless of the number of routes involved (Speed Signaling). The primary exception to this situation is in the field of ...
CBTC is a signalling standard defined by the IEEE 1474 standard. [1] The original version was introduced in 1999 and updated in 2004. [1] The aim was to create consistency and standardisation between digital railway signalling systems that allow for an increase in train capacity through what the standard defines as high-resolution train location determination. [1]
When a train has made a full brake application due to adverse event, or has lost its train air due to a defective valve (a "kicker"), or a broken air line or train separation. The train crew will normally declare that they are "in emergency" over the train radio, thus warning other trains and the dispatcher that there is a problem.
The New York City Subway currently uses various letters and numbers to designate the routes that trains use over the differing lines in the system. Along with the color corresponding to the route's trunk line, these form a unique identifier for the route, easing navigation through the complex system.
The Sercos (serial real-time communication system) interface is a globally standardized open digital interface for the communication between industrial controls, motion devices (drives) and input output devices (I/O). Sercos I and II are standardized in IEC 61491 and EN 61491.
The Isle of Man has a rich transport heritage and boasts the largest narrow-gauge railway network in the British Isles [1] with several historic railways and tramways still in operation. These operate largely to what is known as "Manx Standard Gauge" ( 3 ft [ 914 mm ] narrow gauge ) [ 2 ] and together they comprise about 65 miles (105 km) of ...
In the 1930s, following the integration of train and bus services, the summer train service was trimmed to about a dozen trains each way on all three main routes. This intensive service ran on an entirely single-track system controlled by staff and ticket safeworking, with limited semaphore signalling.
For better efficiency in the division of the system's routes, the Metrocali company developed a city zoning model following the example of the TransMilenio system. However, Metrocali did not assign letters to the trunk lines, but rather divided the entire city into different zones, giving each one a number, which are the following: