All signals herein required given by hand and arm shall be given from the left side of the vehicle in the following manner and such signals shall indicate as follows:
(A) Left turn. Hand and arm extended horizontally;
(B) Right turn. Hand and arm extended upward; and
(C) Stop or decrease of speed. Hand and arm extended downward.
(Prior Code, § 70.072) (Ord. 65-3, passed 4-19-1965) Penalty, see § 70.999