Free ride that takes one up and down (4)
I believe the answer is:
lift
This clue is a double definition.
'free ride' is the first definition.
(as in a lift in someone's car)
'that takes one up and down' is the second definition.
(a lift or elevator takes you up and down)
(Other definitions for lift that I've seen before include "Raise, elevate" , "Pick up" , "Raise - hoist" , "Means of access to different floors" , "remove" .)