The prima facie speed limit on the following portion of DeHavilland Drive is hereby declared to be as follows:
(a) From Rancho Conejo Boulevard to Camino dos Rios, forty (40) miles per hour.
(§ II Ord. 1067-NS, eff. March 27, 1990, as amended by § I, Ord. 1281-NS, eff. April 30, 1997)