Express service operates between Parkchester and Third Avenue – 138th Street during weekdays from approximately 6:30 a.m. to 8:45 p.m. At those times, Pelham Bay Park cannot handle the large number of 6 and <6> trains in service. As a result, 6 trains run local on the Pelham Line south of Parkchester and short turn there. <6> trains make all stops north of Parkchester, then run express using the center track between that station and Third Avenue – 138th Street in the peak direction. At all other times, 6 trains run local on the entire line.
Note that this is a list of New York City Subway lines, which are the physical infrastructure over which services operate.
Lines with colors next to them are trunk lines; trunk lines determine the color of New York City Subway service bullets, except for shuttles, which are dark gray.