Impulse to take to the road (5)
I believe the answer is:
drive
I believe this is a double definition.
'impulse' is the first definition.
(thesaurus)
'to the road' is the second definition.
(drive is a kind of road)
'to take' acts as a link.
(Other definitions for drive that I've seen before include "Urge along" , "required for excursion" , "Pilot a 4x4" , "Strong motivation, ambition" , "Control and steer vehicle" .)