“(3A)

Except as provided by regulations, where—

(a)

a child who is under the age of 12 years and less than 150 centimetres in height is in the rear of a passenger car,

(b)

no seat belt is fitted in the rear of the passenger car, and

(c)

a seat in the front of the passenger car is provided with a seat belt but is not occupied by any person,

a person must not without reasonable excuse drive the passenger car on a road.”

“(5A)

Without prejudice to the generality of subsection (5) above, regulations made by virtue of paragraph (c) of that subsection may, for the purpose of implementing the seat belt Directive,—

(a)

make different provision in relation to different vehicles and different circumstances,

(b)

authorise the wearing of a seat belt approved under the law of any member State other than the United Kingdom.”

“(6)

Regulations made for the purposes of subsection (3) or (3A) above—

(a)

shall include an exemption for any child holding a valid certificate signed by a medical practitioner to the effect that it is inadvisable on medical grounds for him to wear a seat belt, and

(b)

shall, for the purpose of implementing the seat belt Directive, include an exemption for any child holding a certificate to the like effect which was issued in any member State other than the United Kingdom and which, under the law of that State, is valid for purposes corresponding to those of this section,

but such regulations may, for the purpose of implementing that Directive, make either of those exemptions subject to such conditions as may be prescribed.”