All rolling stock, in both the A and B Divisions, run on the same 4 foot 8.5 inches (1,435 mm) standard gauge and use the same third-rail geometry and voltage.
Cars purchased by the City of New York since the inception of the IND and for the other divisions beginning in 1948 are identified by the letter "R" followed by a number.
The 75-foot cars, the R44s, R46s, R68s, and R68As, are not permitted on BMT Eastern Division – the J, L, M, and Z trains – because of sharper curves on those tracks.
[3]: 57 All rolling stock, in both the A and B Divisions, run on the same 4 foot 8.5 inches (1,435 mm) standard gauge and use the same third-rail geometry and voltage.
The subject of several patents, the car's larger profile was similar to that of steam railroad coaches, permitting greater passenger capacity, more comfortable seating, and other advantages.
The BRT unveiled its design, designated BMT Standard, to the public in 1913 and received such wide acceptance that all future subway lines, whether built for the BRT, the IRT, or eventually the IND, were built to handle the wider cars.
In sharp contrast, the rebuilt R32s and R38s retained rollsigns on the sides, but a flip-dot display was placed in the front.
Private companies include Railway Preservation Corp., whose equipment is often used on New York Transit Museum-sponsored excursions.
[a] By January 2022, various older B Division cars, such as the entire fleets of R32s, R38s, R40s, R40As, R42s, and NYCT R44s, were similarly retired and replaced by newer models, including the R160s and R179s.
Cars purchased by the City of New York since the inception of the IND and for the other divisions beginning in 1948 are identified by the letter "R" followed by a number, e.g., R46.
Possible reasons include an increased number of specialized maintenance vehicles that were previously made in house or a lower floor for requiring a formal bidding process to reduce waste and abuse.
[citation needed] In 2001, the New York City Transit Authority started disposing of retired subway cars by dumping them at sea to create artificial reefs, with the intention of promoting marine life.
Subsequent modifications added newer equipment, such as a more advanced laser scanner, to TGC4 prior to its delivery to NYCTA.