(SI 154 of 2010),   Road Traffic (Construction, Equipment and Use) Regulations, 2010:

41.  (1) No person shall drive a motor vehicle drawing a light trailer on any road unless a continuous red retro reflector is fixed to the rear of the trailer extending to within 400 mm of the trailer measured from the outer edges of the reflector to the outer edges of the trailer.

(2) No person shall on any road drive a motor vehicle drawing a trailer other than a light trailer unless a warning sign-

(a)    directed to the rear of the trailer; and

(b)   complying with the requirements of section 37 is fitted to the rear of the trailer:

Provided that the warning sign referred to in subsection (2) shall comply with the provisions of section 32 except subsection (1)(b) and (c) and subsection (4)(c).

(3) No person shall drive a motor vehicle drawing any trailer on any road unless-

(a)    a reflective white “T” of type III complying with the requirements of subsection (4) is fitted to the extreme right front of the trailer;

(b)   a reflective red “T” complying with the requirements of subsection (4) is fitted to the extreme right rear of the trailer and more than one comma two metres above ground level;

(4) The letter “T” referred to in subsection (3) shall be not less than 150 mm high and 120 mm wide, and the strokes of the letters shall be not less than 50 mm thick and placed on a black background not less than 200 mm in height and 175 mm in width.