Sec. 18-58. Same—How such signals given.[212]
The signal required in section 18-57 shall be given by means
of the hand and arm or by some mechanical or electrical device
approved by the superintendent, in the manner herein
specified. Whenever the signal is given by means of the hand
and arm, the driver shall indicate his intention to start, stop,
turn or partly turn by extending the hand and arm from and
beyond the left side of the vehicle, in the following manner:
(1) For left turn or to pull to the left, the arm shall be
extended in a horizontal position straight from and level with
the shoulder;
(2) For right turn or to pull to the right, the arm shall be
extended upward;
(3) For slowing down or to stop, the arm shall be extended
downward.
Wherever the lawful speed is more than thirty-five miles
per hour, such signals shall be given continuously for a distance
of at least one hundred feet, and in all other cases at
least fifty feet, before slowing down, stopping, turning, partly
turning or materially altering the course of the vehicle. (Code
1959, § 18-58.)