The council considered the signs to be temporary signs on private land that contravened provisions of clause three of the bylaws which Mr May claimed wasn't in force at the time his truck was seized.
In a judgment delivered this week, Judge Keith de Ridder ruled that the signs were not temporary but that the truck was parked in a public place in breach of the council's Signs Control Bylaw 2005.
He said the council's drafting of the bylaw in relation to temporary signs was "clumsy and confusing" and that five discreet types of signs were permitted such as sale/lease, direction, community events, elections and proposed projects.
The signs' vehicle did not fall into any of the five categories for temporary signs, he said.
Judge de Ridder rejected the argument that because the land on which Mr May's truck was parked was owned by someone other than the council, it could not be classified as "public place".
He didn't make an order for the disposal of the truck.
Council group manager district living, Paul Dell, said the court concluded that the truck was on a public space and therefore it breached the bylaw.
"In this situation, the LGA (Local Government Act) 2002 allows council to dispose of the truck, after giving the owner notice but without requiring a court order."
Mr Dell said the council had discussed the matter with Mr May who would decide if he wanted the truck back.
Mr May didn't wish to comment on the judgment.
