Communications based train control at MTA New York City Transit. Program background and update

This paper highlights some of the key characteristics of communications based train control (CBTC) functionality which lead to its selection as the most appropriate train control technology for New York City Transit (NYCT) to employ in its long range signal modernization program. The paper also describes the procurement methodology being pursued to develop a system supported by two or more suppliers. In 1996, NYCT retained a consultant Advanced Technology Systems Group (ATSG) to supplement its own technical expertise, particularly in the area of advanced train control technology, during the design and construction of the pilot project. During the design NYCT has continued to exchange information with other transit properties and train control industry suppliers. This paper highlights some key technical decisions. The topics addressed are the selection of single rail power frequency track circuits and 2.4 Gigahertz spread spectrum radio frequency train/wayside communications and coordination with the R-143 new car procurement. A pilot project on the Canarsie Line was advertised on October 31, 1997 as a three phase negotiated procurement. The paper concludes with a current status of the Canarsie Pilot Project.