Train hornA train horn is an air horn used as an audible warning device on diesel and electric-powered trains. Its primary purpose is to alert persons and animals to an oncoming train, especially when approaching a level crossing. They are often extremely loud, allowing them to be heard from great distances. They are also used for acknowledging signals given by railroad employees, such as during switching operations. For steam locomotives, the equivalent device is a train whistle.
AmtrakAmtrak (sigle de l'AAR : AMTK) est une entreprise ferroviaire publique américaine, spécialisée dans le transport de voyageurs. Le nom d'Amtrak a été créé par la contraction des mots anglais AMerica et TRAcK (« la voie ferrée »). Sa dénomination officielle est National Railroad Passenger Corporation (Société nationale du transport ferroviaire de voyageurs), Amtrak étant son nom commercial. Amtrak est née le de la fusion des services voyageurs de 20 compagnies ferroviaires différentes.
WagonwayWagonways (also spelt Waggonways), also known as horse-drawn railways and horse-drawn railroad consisted of the horses, equipment and tracks used for hauling wagons, which preceded steam-powered railways. The terms plateway, tramway, dramway, were used. The advantage of wagonways was that far bigger loads could be transported with the same power. The earliest evidence is of the long Diolkos paved trackway, which transported boats across the Isthmus of Corinth in Greece from around 600 BC.
Métro de MontréalLe métro de Montréal est un réseau de transport en commun qui dessert l'île de Montréal ainsi que les villes québécoises de Laval et de Longueuil, au Canada. Métro sur pneumatiques entièrement souterrain, il est géré par la Société de transport de Montréal (STM), organe de l'agglomération de Montréal. Inauguré le durant le mandat du maire Jean Drapeau, il s'inspire du métro de Paris, autant dans l'architecture de ses stations que dans le matériel roulant utilisé. À son inauguration, le réseau comprend , réparties sur trois lignes.
Higher-speed railHigher-speed rail (HrSR), also known as high-performance rail, higher-performance rail, semi-high-speed rail or almost-high-speed rail, is the jargon used to describe inter-city passenger rail services that have top speeds of more than conventional rail but are not high enough to be called high-speed rail services. The term is also used by planners to identify the incremental rail improvements to increase train speeds and reduce travel time as alternatives to larger efforts to create or expand the high-speed rail networks.
I-beamI-beam is a generic lay term for a variety of structural members with an or -shaped cross-section. Technical terms for similar items include H-beam (for universal column, UC), w-beam (for "wide flange"), universal beam (UB), rolled steel joist (RSJ), or double-T (especially in Polish, Bulgarian, Spanish, Italian and German). I-beams are typically made of structural steel and serve a wide variety of construction uses. The horizontal elements of the are called flanges, and the vertical element is known as the "web".
Semi-finished casting productsSemi-finished casting products are intermediate castings produced in a steel mill that need further processing before being finished goods. There are four types: ingots, blooms, billets, and slabs. Ingot Ingots are large rough castings designed for storage and transportation. The shape usually resembles a rectangle or square with generous fillets. They are tapered, usually with the big-end-down. In the era of commercial wrought iron, blooms were slag-riddled iron castings poured in a bloomery before being worked into wrought iron.
Mine railwayA mine railway (or mine railroad, U.S.), sometimes pit railway, is a railway constructed to carry materials and workers in and out of a mine. Materials transported typically include ore, coal and overburden (also called variously spoils, waste, slack, culm, and tilings; all meaning waste rock). It is little remembered, but the mix of heavy and bulky materials which had to be hauled into and out of mines gave rise to the first several generations of railways, at first made of wooden rails, but eventually adding protective iron, steam locomotion by fixed engines and the earliest commercial steam locomotives, all in and around the works around mines.