Texas Transportation Code - TRANSP § 547.322. Taillamps Required

(a) Except as provided by Subsection (b), a motor vehicle, trailer, semitrailer, pole trailer, or vehicle that is towed at the end of a combination of vehicles shall be equipped with at least two taillamps.

(b) A passenger car or truck that was manufactured or assembled before the model year 1960 shall be equipped with at least one taillamp.

(c) Taillamps shall be mounted on the rear of the vehicle:

(d) A taillamp shall emit a red light plainly visible at a distance of 1,000 feet from the rear of the vehicle.

(e) If vehicles are traveling in combination, only the taillamps on the rearmost vehicle are required to emit a light for the distance specified in Subsection (d).

(f) A taillamp or a separate lamp shall be constructed and mounted to emit a white light that:

(g) A taillamp, including a separate lamp used to illuminate a rear license plate, must emit a light when a headlamp or auxiliary driving lamp is lighted.