Motor Traffic (Amendment) Act (No. 40 of 1984) - Sect 15
Insertion of new section 189A in the principal enactment
15. The following new section is hereby inserted immediately after section 189, and shall have effect as section 189A, of the principal enactment:
189A. Where any motor vehicle is used on any highway with a trailer attached to such vehicle, the trailer shall, in addition to the distinctive number of the trailer, also display the distinctive number of the motor vehicle to which it is attached."