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Track lighting is a method of lighting where light fixtures are attached anywhere on a continuous track device which contains electrical conductors. [1][2] This is in contrast to directly routing electrical wiring to individual light positions. Tracks can either be mounted to ceilings or walls, lengthwise down beams, or across rafters or joists ...
The basic principle behind the track circuit lies in the connection of the two rails by the wheels and axle of locomotives and rolling stock to short an electrical circuit. This circuit is monitored by electrical equipment to detect the absence of the trains. Since this is a safety appliance, fail-safe operation is crucial.
A railway track (British English and UIC terminology) or railroad track (American English), also known as a train track or permanent way (often "perway" [1] in Australia or "P Way" in Britain [2]), is the structure on a railway or railroad consisting of the rails, fasteners, railroad ties (sleepers, British English) and ballast (or slab track ...
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 ...
Rail fastening system. A rail fastening system is a means of fixing rails to railroad ties (North America) or sleepers (British Isles, Australasia, and Africa). The terms rail anchors, tie plates, chairs and track fasteners are used to refer to parts or all of a rail fastening system. The components of a rail fastening system may also be known ...
Light fixture. A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.
A track renewal train in Pennsylvania. Video of a track renewal train north of Cologne, Germany. A track renewal train (also known as a track renewal system or new track construction machine) is a work train that consists of many units of machinery and materials required for track renewal (rail and sleeper replacement) projects.
The once-wonky Georgia State Election Board has burst into the limelight this year as a new Republican majority – made up of a retired obstetrician, a former state senator who put out feelers ...
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