one of the oldest yards in the system. Ten cars are inspected each day as part of preventative scheduled maintenance. A wheel truing machine was installed here to minimize damage to rail cars and tracks caused by flat wheels. This shop was also used as a facility to retrofit all R26s, R28s, R29s, R33s (except single unit Worlds Fair cars) and R36s (both Mainline and Worlds Fair types) married pairs IRT type cars with the installation of new Stone-Safety 10 ton Air Conditioning systems between 1976 and 1981. Also, during this period, all cars assigned to the were inspected and maintained at the East 180th Street Yard shared with the . It re-opened as an inspection and maintenance facility for the in 1982. A car wash operates at this yard facility to serve cars assigned to the 2, in addition to cars assigned to the , , and 5 routes. The yard consists of a seven-track inspection shop and 38 layup tracks. The layup tracks are arranged on two levels; the only other yard in the system to share this trait is the East New York Yard. Access to the yard is provided to and from Nereid Avenue only. On February 3, 1998, two out-of-service trains collided at the yard lead after the motorman of one train passed out at the helm and his train crashed into the one in front of it. 240th Street Yard The 240th Street Yard, also known as Van Cortlandt Yard (or VC Yard), is located at 5911 Broadway in the Riverdale section of the Bronx, serving the IRT Broadway–Seventh Avenue Line near the line's northern terminus. The yard consists of six inspection tracks in the shop and 15 additional layup tracks. The yard is home to the R62A subway cars assigned to the . The shop was built in 1906 to support the original IRT subway. Work constructing the yard and inspection shed was 60 percent complete in June 1910, and was estimated to be completed by January 1, 1911. The inspection shed went into service on May 1, 1911. The yard and shops are entirely on an elevated structure. There is no car washer at this yard; the trains occasionally go to the 239th Street or Westchester Yard to be washed, but they usually go to the nearby 207th Street Yard instead. Ten cars undergo 10,000 mile SMS inspections per day, since their