72. Sections 69 and 70 do not apply to a person:(a) who holds a medical certificate issued by a practising physician attesting that:i. for the space of time indicated therein, such person is unable on medical grounds to wear a seat belt, or
ii. such person’s physical characteristics prevent his wearing a seat belt;
(b) who is under five years of age; or
(c) who weighs less than fifty pounds.
A certified true copy of every certificate issued in accordance with paragraph a must be sent forthwith to the director.