Public use of the line coincided with the operation of the Fair — April 30, 1939 to October 27, 1940. The World's Fair Railroad was not used between seasons. An additional 5-cent fare was charged on top of the standard nickel fare. Special turnstiles were used at the World's Fair station that permitted traffic flow in both directions and accepted two different fares depending on the direction of travel. Fairgoers disembarking from trains paid a nickel as they exited through the turnstiles while passengers leaving the fairgrounds paid a ten-cent fare upon passing through the turnstiles. Dismantling of the line commenced in February 1941.
Seven grade time signals still exist today, albeit being used to control yard traffic. Grade Time signals enforce an unconditional speed limit for trains on grades. They currently are not obeyed in yard service, but previously were used to regulate train speeds.
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.