What does "From Union Station take the Metro Rail Red Line." mean in English for Spanish?

In English for Spanish, "From Union Station take the Metro Rail Red Line." means:

Desde Union Station, toma la Red Line del Metro Rail.

Listen to "From Union Station take the Metro Rail Red Line.": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 3, Scene 6