Staff reminder, no parking at the front (3)
I believe the answer is:
rod
'staff' is the definition.
(both can mean a stick or cane)
I don't understand the rest of the clue.
(Other definitions for rod that I've seen before include "Former measure equal to a quarter of a chain" , "Instrument of punishment" , "Little boy" , "Thin straight bar" , "Stick, symbol of punishment" .)