A bicyclist upon the roadway or upon any public path set aside for the use of bicycles shall give hand and arm signals in the following manner:
1. Left turn, left hand and arm extended horizontally;
2. Right turn, left hand and arm extended upward, or right hand and arm extended horizontally;
3. Stop or decrease speed, left or right hand and arm extended downward.
(Added Coun. J. 6-5-13, p. 54983, § 1)