A junction, when discussed in the context of transport, is a location where traffic can change between different routes, directions, or sometimes modes, of travel.
Road junction
…A road junction is a type of junction where two or more roads meet. Roads are a means of transport, historically linking locations such as towns, forts and geographic features such as river…
Chicago Transit Authority signal tower 18 guides elevated Chicago 'L' north and southbound Purple and Brown lines intersecting with east and westbound Pink and Green lines and the looping Orange line above the Wells and Lake street intersection in the loop.