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  2. Railroad classes - Wikipedia

    en.wikipedia.org/wiki/Railroad_classes

    In the United States, the Surface Transportation Board categorizes rail carriers into Class I, Class II, and Class III based on the carrier's annual revenue. The thresholds, last adjusted for inflation in 2019, are: [4] Class I: A carrier earning revenue greater than $504,803,294; Class II: A carrier earning revenue between $40,387,772 and ...

  3. Category:Category-Class rail transport pages - Wikipedia

    en.wikipedia.org/wiki/Category:Category-Class...

    Pages in category "Category-Class rail transport pages" The following 200 pages are in this category, out of approximately 1,600 total. This list may not reflect recent changes .

  4. List of U.S. Class II railroads - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._Class_II...

    The Class I threshold is $250 million, adjusted for inflation since 1991. [2]). As of 2021, a Class II railroad in the United States has an operating revenue greater than $39.2 million but less than $489.9 million. [3]

  5. Category:Template-Class rail transport pages - Wikipedia

    en.wikipedia.org/wiki/Category:Template-Class...

    Template talk:Alessandria–Novara–Arona railway; Template talk:Alexandria Extension; Template talk:Alexandroupolis railway station; Template talk:Alexandroupolis–Svilengrad railway diagram; Template talk:Algeria-rail-transport-stub; Template talk:Algiers Metro; Template talk:Algoma Eastern Railway; Template talk:Alishan Forest Railway navbox

  6. North American railroad signaling - Wikipedia

    en.wikipedia.org/wiki/North_American_railroad...

    Some form of ATS or ATC is required on all U.S. rail lines that operate at 80 mph or more. In the 1990s, Communication-based train control (CBTC) systems started to be used in rail transit systems. These systems utilize radio communications between train and wayside equipment to perform the functions of the signaling system.

  7. Electro-diesel multiple unit - Wikipedia

    en.wikipedia.org/wiki/Electro-diesel_multiple_unit

    SNCF Class B 81500, an example of an electro-diesel multiple unit. An electro-diesel multiple unit (EDMU) or bi-mode multiple unit (BMU) is a form of a multiple unit train that can be powered either by electric power picked up from the overhead lines or third rail (like an electric multiple unit – EMU) or by using an onboard diesel engine, driving an electric generator, which produces ...

  8. Track geometry car - Wikipedia

    en.wikipedia.org/wiki/Track_geometry_car

    Rail profile – Looks for rail wear and deviations from standard profile. Warp – The maximum change in crosslevel over a predetermined chord length (generally sixty-two feet). [10] Track geometry cars used by the New York City Subway also measure: Corrugation of running rail surface; Tunnel and station platform clearances; Third rail height ...

  9. Railway track - Wikipedia

    en.wikipedia.org/wiki/Railway_track

    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.