Abstract
A new express train network, so called great train express abbreviated as GTX, in Seoul metropolitan area has been proposed in this paper. The new rail mass transit is different from the conventional one in that it is super rapid transit, the commercial speed of which amounts up to 100km, and it will be constructed and operated in far deep underground. Three lines were proposed on top of the existing transportation network and demand patronage and economic efficiency of the system were analyzed. With identified economic feasibility of 1.24, the system alternative was included in the national transportation plan and will be implemented in due course. Some multinational comparisons among similar and/or equivalent urban rapid rail systems will be highlighted, together with some local issues to be solved for proper implementation.
