Section 138(4)(f) in The Central Motor Vehicles Rules, 1989
(f)[ at the time of purchase of the two wheeler, the manufacturer of the two wheeler shall supply a protective headgear conforming to specifications prescribed by the Bureau of Indian Standards under the Bureau of Indian Standards Act, 1986 (63of 1986): [Clause (f) inserted by GSR 589(E), dated 16.9.2005 (w.e.f. 16.3.2006).]