Section 97(1) in The Central Motor Vehicles Rules, 1989
(1)[[Every trailer including modular hydraulic trailer] [Substituted by GSR 933(E), dated 28.10.1989 (w.e.f. 28.10.1989).], other than a tractor-drawn trailer, having five hundred kilogrammes and more of weight] shall have an efficient braking system which are capable of being applied when it is being drawn,(i)in the case of trailer having not more than two axles, to at least all the wheels of one axle; or(ii)in the case of a trailer having more than two axles, to at least all the wheels of two axles:Provided that the braking system shall be so constructed that it is not rendered ineffective by the non-rotation of the engine of the drawing vehicle.
