The prima facie speed limit on the following portions of Westlake Boulevard is hereby declared to be as follows:
(a) From Autumn Ridge Drive to Avenida de los Arboles, forty-five (45) miles per hour.
(b) From Avenida de los Arboles to Route 101 Freeway, fifty (50) miles per hour.
(§ II, Ord. 544-NS, eff. October 2, 1975, as amended by § I, Ord. 710-NS, eff. May 10, 1979, § I, Ord. 1067-NS, eff. March 27, 1990, § I, Ord. 1097-NS, eff. April 11, 1991, § I, Ord. 1120-NS, eff. September 24, 1991, Ord. 1364-NS, eff. October 12, 2000, and Ord. 1390-NS, eff. May 23, 2002)