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New Signal On Subway Tracks

New track signal equipment on the D-Line in the Bronx

Concourse Signaling


The signal equipment on the NYC Transit (NYCT) Concourse Line was installed in 1931. Construction work entailed the modernization of signal equipment on approximately 20 track miles (205th Street in the Bronx to 145th Street in Manhattan), reverse signaling on the center track, as well as construction of various enclosures at stations, on the wayside, and construction of a new Master Tower.


The Concourse Line is the largest conventional signaling project in the history of NYC's subway system. It consists of installing 86,000 feet of messenger cable to support the new signal cables (power, data and fiber optics), 1,003,000 feet of signal and fiber cables, and 325 stainless steel equipment cases. These cases along with 384 signal, code and communication cabinets vitally control all 267 LED signals, 225 train stops, 46 switch machines and voice/data communications that are then transmitted back to the equipment rooms, Master Tower and Command Center.


Along with installing six miles of messenger cables and support brackets, the work entailed chopping out crash walls and niches as high as seven feet and 18-inches thick to accommodate placement of the wayside signal equipment. There are 314 insulated joints placed on the roadbed at rail–cut sections. We furnished 384 racks and cabinets in the signal and communication rooms with an additional 250,000 feet of cable between racks. The systems work consisted of fiber and network cabling, network integration and connectivity to the NYCT WAN, CCTV, Access Control, Integrated PENTA voice–dataradio communication system, Building Management System, fire, smoke intrusion and hydrogen detection systems.


The construction team managed all facets of the project including design, purchasing over $30 Million in vital signal and communications equipment, coordinated the equipment vendors and electrical installers, and handled all administration, safety, quality, scheduling, and payment processing.