ELI5: Explain Like I'm 5

New York City Subway rolling stock

Okay, so you know how grown-ups ride on these really big trains called subways to get around the city? Well, those subways need special train cars called rolling stock to run on the tracks.

The rolling stock basically means all the parts of the train car that help it move along the tracks. This includes the wheels, motors, and electrical systems that make the train run.

The New York City subway has lots of different types of rolling stock, but they all serve the same purpose of moving people around the city. Some of the trains even have special designs on them, like they might be painted in different colors or have cool pictures and logos.

Inside the train, there are seats for people to sit on, and handles to hold onto so they don't fall over when the train moves. There are also special lights, air conditioning, and even Wi-Fi so people can stay connected while on the train.

The rolling stock is really important to the subway system because without it, the trains couldn't run smoothly and people would have a hard time getting around the city. So next time you ride the subway, remember to thank the rolling stock for getting you to your destination!