All signals herein required given by hand and arm shall be given from the left side of the vehicle in the following manner and the signals shall indicate as follows:
(A) Left turn: hand and arm extended hori- zontally.
(B) Right turn: hand and arm extended upward.
(C) Stop or decrease speed: hand and arm extended downward.
('73 Code, § 21-98) (Ord. 62-610, passed 10-1-62) Penalty, see § 70.999