A. Any stop or turn signal, when required herein, shall be given either by means of the hand and arm or by signal lamps, except as otherwise provided in subsection B of this section.
B. Any motor vehicle in use on a street or highway shall be equipped with, and required signal shall be given by, signal lamps when the distance from the center of the top of the steering post to the left outside limit of the body, cab or load of such motor vehicle exceeds twenty four inches (24"), or when the distance from the center of the top of the steering post to the rear limit of the body or load thereof exceeds fourteen feet (14'). The latter measurement shall apply to any single vehicle and also to any combination of vehicles. (2002 Code § 10.08.290)
C. All signals herein required to be 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:
1. Left turn: Hand and arm extended horizontally.
2. Right turn: Hand and arm extended upward.
3. Stop or decrease speed: Hand and arm extended downward. (2002 Code § 10.08.300)