take the second turning on the right.为什么用take?

Sometimes "take" also has the same meaning as "choose".For example,have you ever noticed that foreigners will say"take your option" when they recommend you to do something?That's it.
Here is the explanation of your question:
There is not only one turning but more than one turing on the streets,so you must "choose" or "take" a certain one-"the second one on the right".

固定用法