Wait for the passengers on incoming subway cars to exit the car before you get on the train. Once everyone has left the car, follow single file through the doors and onto the train. Continue as far back you can before choosing a seat to allow more people to come into the train in an efficient manner.
Keep your children with you at all times while on the subway. If your family does not have seating, make sure the kids are off to the sides of the aisle to prevent other passengers from tripping over them. Close up all strollers that are not being used.
Give up your seat if another passenger needs it more than you. Senior citizens and people with disabilities commonly have priority seating on subway trains. This courtesy usually extends to pregnant women also and in most cases is appreciated very much.
Follow common escalator etiquette in all subway stations. Stay to the right side of the escalator, allowing people to pass you on the left.
Converse with your friends and family in a quiet voice while riding on the subway. Use headphones for MP3 players so as not to disturb other passengers.
Follow the rules of most public transit systems by not eating on the trains. Store any unfinished food in your bag or backpack until you have exited the subway. Throw all trash in marked trash receptacles at the stations.
Keep to yourself while using public transportation. Avoid staring at other passengers or engaging strangers in conversation. This is not only good etiquette, but a safety measure as well.