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A railway track (CwthE and UIC terminology) or railroad track (NAmE), also known as permanent way (CwthE) [1] or "P Way" BrE [2] and Indian English), is the structure on a railway or railroad consisting of the rails, fasteners, sleepers (railroad ties in American English) and ballast (or slab track), plus the underlying subgrade.
The railway track or permanent way is the elements of railway lines: generally the pairs of rails typically laid on the sleepers or ties embedded in ballast, intended to carry the ordinary trains of a railway. It is described as a permanent way because, in the earlier days of railway construction, contractors often laid a temporary track to ...
A right-hand railroad switch with point indicator pointing to right Animated diagram of a right-hand railroad switch. Rail track A divides into two: track B (the straight track) and track C (the diverging track); note that the green line represents direction of travel only, the black lines represent fixed portions of track, and the red lines depict the moving components.
Three railway lines crossed over the bridge, connecting cities on both sides of the border. The Great Western Railway, New York Central Railroad, and New York and Erie Rail Road differed in track gauge; the bridge used a triple gauge system to conserve space, overlapping two tracks on top of each other and using a rail of each to form the third ...
"Typical Stone Ballasted Track", photo published in 1921. Though rail tracks were held in place by wooden ties (sleepers outside the U.S. and Canada) and the mass of the crushed rock beneath them, each pass of a train around a curve, through centripetal force and vibration, produces a tiny shift in the tracks, requiring that work crews periodically realign the track.
A grand union is a rail track junction where two double-track railway or tramway lines cross at grade, often in a street intersection or crossroads.A total of sixteen railroad switches (sets of points) allow streetcars (or in rarer installations, trains) coming from any direction to take any of the three other directions.
The five-track railway line just south of Kursky Terminal is crossed through a narrow tunnel built at the beginning of the 20th century and unsuitable for a two-track tram line. Other similar stretches were removed or re-organised, since according to the standards, gauntlet tracks on tram lines are only permitted as a temporary measure. [ 14 ]
Part of a series on Rail transport History Company types Infrastructure Management Rail yard Railway station list Railway track Maintenance Track gauge Service and rolling stock Bogie (truck) Couplings Freight Locomotives Multiple units Passenger train Commuter High-speed Inter-city Regional Rail subsidies Railroad cars Operating Trains Maglev Monorail Urban rail transit Tram History Light ...