The objective of these Regulations is to prescribe the manner—
(a) of calculating periodic payments of impairment benefits for the purposes of—
(i) section 47(4) of the Transport Accident Act 1986 ; and
(ii) section 48(1) of the Transport Accident Act 1986 , as in force immediately before the commencement of section 13 of the Transport Accident (Amendment) Act 2004 ; and
(b) of determining, for the purposes of section 56 of the Transport Accident Act 1986 , an amount being in redemption of the sum of the periodic payments under section 48 of that Act, as in force immediately before the commencement of section 13 of the Transport Accident (Amendment) Act 2004 , and the weekly payments under section 49, 50 or 51 of the Transport Accident Act 1986 .