Section 104(3) in The Central Motor Vehicles Rules, 1989
(3)[ All trailers including semi-trailers, other than those drawn by three-wheeled tractors [* * *] [Substituted by GSR 214(E), dated 18.3.1999 (w.e.f. 18.3.1999).] shall be fitted with the following reflex reflectors, namely,(i)two white reflex reflectors in the front, one each at the right and left corners at a height not exceeding 1500 mm above the ground,(ii)two red reflex reflectors in the rear, one each at the right and left corners at a height not exceeding 1500 mm above the ground, and(iii)the area of the reflectors referred to above shall not be less than 28.5 sq. cm. in the case of trailers with overall length exceeding 6 metres and shall not be less than 7 sq.cm. in case of other trailers.]
