The New York City subway has 468 stations serving 24 subway lines more than any other system in the world. Riding safety requires you to have customer information steadily available. The person who can provide that information the best is a MTA station agent representative. Instead of asking the question "does this train station have an agent"?, use the station agent informer. It will give you update to date information, that states the capacity in which the agents are serving the desired station.