The Railroad are quite secretive, so you will have to do a bit of digging to find them.How to Find and Join the Railroad? Road to Freedom

Currently, they are led by a woman named Desdemona who has improved the Railroad’s operations significantly. The current iteration of the Railroad was preceded by another that was destroyed by the Institute. They have an intensive surveillance network throughout the Commonwealth. They use a system of dead drops and secret hideouts. Their base is hidden to the world, and their agents remain anonymous and use disguises. The Railroad works in secrecy out of necessity, as the Institute would destroy them if given the chance. Some in the Commonwealth view them as dangerous junkpiles that need to be eradicated, and some, like the Railroad, believe that they deserve the same rights as biological human beings. (I will keep Institute spoilers to a minimum here). Synths are creations of The Institute, and the newer models are almost indistinguishable from humans.

They aim to free the enslaved and persecuted synths that live in the Commonwealth. The Railroad is similar to the underground railroad of American history.

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