(A) General.
(1) When any other traffic may be affected by such movement, no person shall turn any vehicle without giving a signal of his or her intention to turn right or left. Such signal shall be given continuously during not less than the last 100 feet traveled by the vehicle before turning.
(2) No person shall stop or suddenly decrease the speed of a vehicle without first giving an appropriate signal to the driver of any vehicle immediately to the rear, when there is opportunity to give such signal.
(3) A stop or turn signal required by this section shall be given by means of the hand and arm or by a signal lamp or mechanical signal device of a type approved by the State Department of Public Safety; provided however, that when the body of a vehicle or the body and load of a vehicle projects 24 inches or more to the left of the center of the steering wheel, or under any condition when a hand and arm signal would not be visible both to the front and rear of the vehicle, the vehicle must be equipped with and the signals must be given by such turn-indicating lamp or device.
(4) The signal lamps provided for in this section shall be used to indicate an intention to turn, change lanes or start from a parked position and shall not be flashed on a moving vehicle as a courtesy or “do pass” signal to operators of other vehicles approaching from the rear.
(`87 Code, § 17-207)
(B) Manner of giving with hand and arm. All signals required by division (A) of this section, when given by hand and arm, shall be given from the left side of the vehicle in the following manner and such signals shall indicate as follows:
(1) Left turn. Hand and arm extended horizontally;
(2) Right turn. Hand and arm extended upward;
(3) Stop or decrease speed. Hand and arm extended downward.
(`87 Code, § 17-208)
Statutory reference:
Similar provisions, see Tex. Transportation Code, §§ 545.103 through 545.107