You could take one to the advice bureau (3)
I believe the answer is:
cab
'bureau' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for cab that I've seen before include "Taxi to hold an engine-driver" , "A taxi in New York" , "An American taxi" , "info for citizens provided here" , "A taxi in America" .)