Premetro

A premetro is a tramway or light railway which includes segments built to rapid transit standards, generally as part of a process of conversion to a metro-standards railway usually by the construction of tunnels in the central city area.^[1]^[2]^[3]

^ De Leuw, Cather & Company (1976). Light Rail Transit: A State of the Art Review, Executive Summary. p. 47. Retrieved 30 August 2023. This step-by-step planning approach to building rail rapid transit is known as pre-metro, implying the intention to ultimately construct a fully grade separated route to be used by rail rapid transit or metro trains.
^ Vuchic, Vukan R. (2007). Urban transit systems and technology. Hoboken, N.J: J. Wiley & Sons. p. 580. doi:10.1002/9780470168066.fmatter. ISBN 9780471758235. Retrieved 7 October 2023. PREMETRO—An LRT system designed with provisions for easy conversion into RRT (metro).
^ John Hoyle (16 May 1975). "Letters to the editor -- The tram is the answer". Sydney Morning Herald. Retrieved 13 January 2014. Cities such as Frankfurt and Cologne in West Germany have further developed their tramway system by introducing a concept known as "premetro." In this system trams or light rail vehicles make extensive use of tunnels, reserve track and by utilizing folding steps these vehicles can operate through high or low stopping places.

[DLC&C-1] De Leuw, Cather & Company (1976). Light Rail Transit: A State of the Art Review, Executive Summary. p. 47. Retrieved 30 August 2023. This step-by-step planning approach to building rail rapid transit is known as pre-metro, implying the intention to ultimately construct a fully grade separated route to be used by rail rapid transit or metro trains.

[UTS&T-2] Vuchic, Vukan R. (2007). Urban transit systems and technology. Hoboken, N.J: J. Wiley & Sons. p. 580. doi:10.1002/9780470168066.fmatter. ISBN 9780471758235. Retrieved 7 October 2023. PREMETRO—An LRT system designed with provisions for easy conversion into RRT (metro).

[SMH-3] John Hoyle (16 May 1975). "Letters to the editor -- The tram is the answer". Sydney Morning Herald. Retrieved 13 January 2014. Cities such as Frankfurt and Cologne in West Germany have further developed their tramway system by introducing a concept known as "premetro." In this system trams or light rail vehicles make extensive use of tunnels, reserve track and by utilizing folding steps these vehicles can operate through high or low stopping places.

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