KenH said:
From
http://www.txdps.state.tx.us/msb/txmclaws.htm#Chapter 2
TURN SIGNAL LAMPS REQUIRED.
(a)Except as provided by Subsection (b), a motor vehicle, trailer, semitrailer, or pole trailer shall be equipped with electric turn signal lamps that indicate the operator's intent to turn by displaying flashing lights to the front and rear of a vehicle or combination of vehicles and on that side of the vehicle or combination toward which the turn is to be made.
* * * * *
(c) Turn signal lamps:
(1) shall be mounted at the same level and spaced as widely apart as practicable on the front and on the rear of the vehicle; and
(2) may be included as a part of another lamp on the vehicle.
(d) A turn signal lamp shall emit:
(1) a white or amber light, or a color between white and amber, if the lamp is mounted on the front of the vehicle; or
(2) a red or amber light, or a color between red and amber, if the lamp is mounted on the rear of the vehicle.
(e) A turn signal lamp must be visible in normal sunlight at a distance of:
(1) at least 500 feet from the front and rear of the vehicle if the vehicle is at least 80 inches wide; and
(2) at least 300 feet from the front and rear of the vehicle if the vehicle is less than 80 inches wide.
My interpretation is that turn signals must be installed as far apart as possible, so unless your taillight is as wide as your stock turn signals, mounting the signals in the light would be a violation. Subsection B referred to above exempts mopeds from the turn signal requirement.
There is another chapter: This one lists what is required.
Subch. M. ADDITIONALORALTERNATIVEEQUIPMENT REQUIREMENTS FOR MOTORCYCLES AND MOTOR-DRIVEN CYCLES
TRC §547.801.
LIGHTING EQUIPMENT.
(a) A motorcycle, including a motor-driven cycle, shall be equipped with:
(1) not more than two headlamps mounted at a height from 24 to 54 inches;
(2) at least one taillamp mounted at a height from 20 to 72 inches;
(3) a taillamp or separate lamp to illuminate the rear license plate that complies with the requirements of Sections 547.322(f) and (g);
(4) at least one stoplamp that complies with the requirements of Section 547.323(d); and
(5) at least one rear red reflector that complies with the requirements of Section 547.325(b) and may be included as a part of the taillamp.
(b) A motorcycle, other than a motor-driven cycle, shall be equipped with multiple-beam lighting equipment that produces:
(1) an uppermost distribution of light that reveals a person or vehicle at a distance of at least 300 feet ahead; and
(2) a lowermost distribution of light that:
(A) reveals a person or vehicle at a distance of at least 150 feet ahead; and
(B) is aimed so that no part of the high-intensity portion of the beam on the motorcycle that is on a straight and level road under any condition of loading projects into the eyes of an approaching vehicle operator.
(c) A motor-driven cycle shall be equipped with:
(1) multiple-beam lighting equipment that complies with the requirements of Subsection (b); or
(2) single-beam lighting equipment that:
(A) emits light sufficient to reveal a person or vehicle:
(i) at a distance of at least 100 feet when the cycle is operated at a speed less than 25 miles per hour;
(ii) at a distance of at least 200 feet when the cycle is operated at a speed of 25 miles per hour or more; and
(iii) at a distance of at least 300 feet when the cycle is operated at a speed of 35 miles per hour or more; and
(B) is aimed so that no part of the high-intensity portion of the beam from the lamp on a loaded cycle projects a beam higher than the level center of the lamp for a distance of 25 feet ahead.
(d) A motorcycle may not be operated at any time unless at least one headlamp on the motorcycle is illuminated. This subsection does not apply to a motorcycle manufactured before the model year 1975.
The common rule is what was said earlier, if it has them they must work, if they don'thave them, they don't. I may be wrong but when reading the laws you cannot take just one chapter and make it apply. Notice that is does say up top of this law "Additional Alternative Equipment" go figure what they meant by that
By the way, I am not agreeing or disagreeing with anyone