Texas Transportation Code - TRANSP § 547.371. General Lighting Equipment Requirements

(1) at least two headlamps that comply with Section 547.333, 547.334, or 547.335;

(2) at least one red lamp visible at a distance of at least 1,000 feet from the rear and mounted as far to the left of the center of the vehicle as practicable;

(3) at least two red reflectors visible at all distances from 100 to 600 feet from the rear when directly in front of lawful lower beams of headlamps; and

(4) hazard lamps as described in Section 547.331, which shall be lighted and visible in normal sunlight at a distance of at least 1,000 feet from the front and rear.