Utilize the New York Subway System's comprehensive guide to subway signals that is located on the internet. This guide includes information on how to learn the subway signals for the New York Metro, which is one of the most extensive systems in the U.S. Basic signaling principles are that are used in many other cities besides New York are explained, which makes this guide particularly helpful.
Study the different types of signaling such as automatic and interlocking to gain a deeper understanding of how these systems work. Some systems use all automatic signals, which are mainly controlled by subway traffic controllers. Others use a combination of interlocking and automatic signals, which are controlled partially by traffic controllers and partially by subway conductors.
Study approach and marker signals, which are used when trains are pulling into and out of stations for safety purposes. These may be the most visible signals from inside the terminal, and they often look similar to traffic signals. Some terminals also have bells that ring when it is safe for trains to exit the station.
Learn about the conductor's signals, which vary depending on the subway system. For example, in some cities the track lights come on when the conductor begins to move the train. Other conductor signals may include a light on the conductor indication board that signals when the train is at the proper alignment for passengers to get on and off.
