It’s full speed ahead for enforcement of an existing ordinance that forbids riding bicycles or skateboards on sidewalks in historic downtown McMinnville. Signs warning the public of the rules will be placed as instructed by city officials.Safety Committee members met and voted unanimously to put the signs up and begin enforcement. Voting in favor of the measure were Aldermen Mike Neal, chairman, Rick Barnes and Ken Smith.“I’m opposed to this, but I’m not on your committee,” said Alderman Ben Newman.