No person shall operate on a public road a motor vehicle or a combination of motor vehicles, if the overall length of such vehicle or combination of vehicles exceeds seven metres, unless there is fitted, on each side of such vehicle, or on each side of every motor vehicle in such combination of vehicles, as the case may be—
| (a) | one yellow retro-reflector— |
| (i) | within three metres of the front of such vehicle or combination of vehicles; |
| (ii) | within one metre of the back of such vehicle or combination of vehicles; and |
| (iii) | in the case of a combination of motor vehicles, of which a trailer, other than a semi-trailer, forms a part, within three metres of the front of the trailer; and |
| (b) | so many additional yellow retro-reflectors as may be necessary to ensure that no two successive yellow retro-reflectors on any side are more than three comma six metres apart, |
complying with the provisions of regulations 189 and 192: Provided that—
| (i) | yellow retro-reflectors need not be fitted to a bus or minibus which is not a school bus, including such a bus or minibus which forms part of a combination of motor vehicles; |
| (iA) | yellow retro-reflectors need not be fitted to motor vehicles fitted with retro-reflective material on the sides as prescribed in regulation 192A; |
[Regulation 188(iA) inserted by regulation 39 of Notice No. 2116 of 2001]
| (ii) | in the case of a combination of motor vehicles where the drawing vehicle is a motor car, yellow retro-reflector need not be fitted to such drawing vehicle; and |
| (iii) | in the case of a combination of motor vehicles where the drawing vehicle is a motor car, bus or minibus, which is not a school bus, the front of such combination shall, subject to the provisions of paragraph (i), be deemed to be the front of the vehicle immediately following such drawing vehicle. |
