(a) A vehicle may be equipped with lamps to warn other vehicle operators of a vehicular traffic hazard that requires unusual care in approaching, overtaking, or passing.
(b) The lamps shall be:
(1) mounted at the same level and spaced as widely apart as practicable on the front and on the rear of the vehicle; and
(2) visible at a distance of at least 500 feet in normal sunlight.
(c) The lamps shall display simultaneously flashing lights that 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.
Official text of the Texas Transportation Code as published by the Texas Legislative Council.