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(a) (1) No person shall operate any motor vehicle manufactured or assembled on or after January 1, 1954, unless the vehicle is equipped with electrical or mechanical directional signals.
(2) No person shall operate any motorcycle or motor-driven cycle manufactured or assembled on or after January 1, 1968, unless the vehicle is equipped with electrical or mechanical directional signals.
(b) “Directional signals” means an electrical or mechanical signal device capable of clearly indicating an intention to turn either to the right or to the left and which shall be visible from both the front and rear.
(c) All mechanical signal devices shall be self-illuminating devices when in use at the times mentioned in Section 337.02.
(d) Whoever violates this section is guilty of a minor misdemeanor.