The council may, by resolution, establish limited speed zones when, on the basis of an engineering and traffic survey, it determines that a speed limit of sixty-five or fifty-five miles per hour is more than is reasonable or safe on any part of a street or highway when such speed limit is sixty-five or fifty-five miles per hour under the California Vehicle Code and further determines that a speed of sixty, fifty-five, fifty, forty-five, forty, thirty-five, thirty or twenty-five miles per hour is more appropriate to facilitate the orderly movement of vehicular traffic. (Ord. 4537 § 2, 2008; prior code § 11.04.033(b))