A. The speed of any vehicle upon a county highway not in excess of the limits specified in Section 10.04.040 is lawful unless clearly proved to be in violation of the basic speed law as defined in Section 10.04.050.
B. The speed of any vehicle upon a county highway in excess of the prima facie speed limits in Section 10.04.040 is prima facie unlawful unless the defendant establishes by competent evidence that the speed in excess of the limits did not constitute a violation of the basic speed law at the time, the place and under the conditions then existing.
(Ord. 67-11 § 6, 1967.)