rate was rising steadily. In 2012, money was directed to replace the R32 with the R179. Bombardier Transportation won the $600 million contract to build 300 new cars. The R179s were expected to replace the R32s with some being allocated to the C. However, delivery of the R179s was delayed until 2017 and the R32s momentarily remained in service after the order was completed, so stopgap measures were implemented. All trains on the C were only long, partially due to lower ridership levels on the route, according to NYC Transit's Rapid Transit Loading Guideline. This contrasted to those on the rest of the mainline B Division (except for the Eastern Division and the train), which are long. In the summer of 2010, some 600-foot-long R44 trains ran on the C, displacing some R32s, whose air conditioning units were repaired. In the summers of 2011 and 2012, some 600-foot-long R46 trains were used on the C, while the R32s were used on the A, which had significant outdoor sections where the air conditioning units did not have to be used. In the summers of 2013 and 2014 as well as from May 2015 to February 2019, some 480-foot-long R160As ran on the C, covering half of its fleet, because of the R32s' continuously aging air compressors caused by the entirely underground C route. Concurrently, some R32s in exchange were transferred to East New York Yard, where they were used on the mostly outdoor . On December 16, 2017, after several failed proposals to permanently lengthen C trains as ridership increased, some 600-foot-long R46 trains were reassigned to the C, displacing some more R32s, which were reassigned to the A. On November 6, 2018, some 480-foot-long R179 trains started running on the C, gradually displacing the R160As back to East New York Yard by February 6, 2019. Since delivery of the R179s, they have periodically experienced major mechanical and technical issues, forcing the MTA to remove them from service system-wide for brief periods of time to allow these issues to be corrected. Route Service pattern The following table shows the lines used by the C: Stations For a more detailed station listing, see the articles on the lines listed above. Notes References External links MTA NYC Transit – C Eighth Avenue Local MTA NYC Transit – A C Line Review Main Document New York City Subway services