Cross-platform interchange
A cross-platform interchange is a type of interchange between different lines at a metro station. The term originates with the London Underground; such layouts exist in other networks but are not commonly so named. In the United States and Canada, it is often referred to as a cross-platform transfer.
Double cross platform interchange looking from one train through another train (which has its doors open on both sides) to reveal a third train at Barking in London
The upper-level platforms (2 and 4) of Siam Station serving westbound trains
Cross-platform interchanges between different train categories in Xipu Railway Station, Chengdu. The double track of Line 2 of Chengdu Metro is in the middle, while the double tracks of national rail transport system (Chengdu–Dujiangyan intercity railway) are on both sides.
Yau Tong station cross-platform interchange
The London Underground is a rapid transit system serving Greater London and some parts of the adjacent home counties of Buckinghamshire, Essex and Hertfordshire in England.
The nickname "Tube" comes from the circular tube-like tunnels through which the small profile trains travel. (Deep level Northern line London Underground 1995 Stock train)
A sub-surface Metropolitan line train (S8 Stock) at Farringdon
The Metropolitan Railway opened in 1863 using GWR broad-gauge locomotives.
Passengers wait to board a tube train in 1906.
