(1) A learner’s licence issued under this Act shall, subject to the other provisions of this Act, be effective for a period of six months from the date of issue of the licence. (2) A driving licence issued or renewed under this Act shall,— (a) in the case of a licence to drive a transport vehicle, be effective for a period of five years: Provided that in the case of licence to drive a transport vehicle carrying goods of dangerous or hazardous nature be effective for a period of three years and renewal there of shall be subject to such conditions as the Central Government may prescribe; and; (b) in the case of any other licence, subject to such conditions as the Central Government may prescribe, if the person obtaining the licence, either originally or on renewal thereof,— (i) has not attained the age of thirty years on the date of issue or, renewal thereof, be effective until the date on which such person attains the age of forty years; or (ii) has attained the age of thirty years but has not attained the age of fifty years on the date of issue or, renewal thereof, be effective for a period of ten years from the date of such issue or renewal; or (iii) has attained the age of fifty years but has not attained the age of fifty-five years on the date of issue or, renewal thereof, be effective until the date on which such person attains the age of sixty years; or (iv) has attained the age of fifty-five years on the date of issue or as the case may be, renewal there of, be effective for a period of five years from the date of such issue or renewal.