Sec. 489(18). Signals on starting, stopping or turning.
(a) The driver shall indicate his intention to start, stop, or
turn or partly turn from a direct line, and shall first see that
such movement can be made in safety and whenever the operation
of any other vehicle may be affected by such movement
shall give a signal as required in this subsection plainly visible
to the driver of such other vehicle of his intention to make such
movement.
(b) The signal herein required shall be given by means of
the hand and arm, or by some mechanical device approved by
the Director of the Division of Motor Vehicles 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 or turn or
partly turn by extending the hand and arm from and beyond the
left side of the vehicle, in the manner following:
(c) 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.
(d) For right turn, or to pull to the right, the arm shall be
extended upward.
(e) For slowing down or to stop, the arm shall be extended
downward.
(f) Such signals shall be given at least fifty feet before slowing
down, stopping, turning, partly turning, or materially altering
the course of the vehicle, and the presence and use of a "stop
light", or other electrical indication, not plainly simulating the
hand and arm, or mechanical device, signals provided herein
shall not relieve the driver of the necessity for the use of and the
giving of the signals herein contained.
(g) Drivers having once given a hand, or mechanical device,
signal must continue the course thus indicated unless they alter
the original signal and take care that drivers of vehicles and pedestrians
have seen and are aware of the change.
(h) Drivers receiving a signal from another driver shall keep
their vehicles under complete control, and shall be able to avoid
an accident resulting from a misunderstanding of such signal.
(i) Drivers of vehicles, standing or stopped at the curb or
edge before moving such vehicles, shall give signals of their intention
to move into traffic.
