"Driveway, shared" ("shared driveway") means a road network element that provides a single vehicle and pedestrian access in a private tract or easement for two lots that have no more than two dwelling units or two Group U occupancies per lot. (Added by Amended Ord. 08-101, Jan. 21, 2009, Eff date Apr. 21, 2009; Amended by Amended Ord. 12-049, Oct. 3, 2012, Eff date Jan. 1, 2013).