Texas Transportation Code - TRANSP § 547.323. Stoplamps Required

(a) Except as provided by Subsection (b), a motor vehicle, trailer, semitrailer, or pole trailer shall be equipped with at least two stoplamps.

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

(c) A stoplamp shall be mounted on the rear of the vehicle.

(d) A stoplamp shall emit a red or amber light, or a color between red and amber, that is:

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

(f) A stoplamp may be included as a part of another rear lamp.

(g) For purposes of Section 547.3215, a high-mounted stoplamp is considered to comply with the current federal standards in 49 C.F.R. Section 571.108 if the stoplamp varies in intensity four or fewer times but never deactivates when the vehicle brakes for not more than two seconds.