Forum:Why am i not able to teleport to New-U stations?

The only ones i can teleport to are the 2 from the addons, zombie island and secret armory. And when i go to one of them, it lets me teleport back to the first town, but that's all.

I just got into Dahl Headlands, and i'm wondering why i am not able to teleport to any previous new-u stations?