(a) A person driving a bicycle upon a roadway before stopping, turning or changing lanes, shall give a signal as required in this section.
(b) The signal required in this section shall be given either by means of the hand and arm in the manner specified, or by a mechanical or electrical signal device. When a signal is given by means of hand and arm, the cyclist shall indicate his intention to stop or turn as follows:
(1) Left turn, left hand and arm extended horizontally;
(2) Right turn, left hand and arm extended upward; or
(3) Stop or decrease speed, left hand and arm extended downward.
(Ord. No. 108, § 5.505, 6-16-1980)