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Ajunction, when discussed in the context oftransport, is a location wheretraffic can change between different routes, directions, or sometimes modes, of travel.
The word "junction" derives from Latiniunctus, past participle ofiungere, to join. The word "junction" in this context may also refer to:
Historically, manycities andmarket towns developed wherever there was a junction. Aroad intersection offered opportunities for rest or trade for travellers andmerchants. Towns sprang up to accommodate this; the first such inEurope were probably at intersections of theRoman roads.
A similar effect came with the growth ofrail transport; so-calledrailway towns grew up near majorrailway junctions – originally to accommodate railway workers, but expanding into fully functioning settlements over time.
Junctions also developed where different modes of transport intersected, e.g. canal and rail.
There are many types of different junction forroad transport andrail transport (includingmetro andrapid transit systems). If many of these are contained in a small area, and where passengers can change from one transport mode to the other in them, it is said to be atransport hub.
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