Legal principles
13 Although it is necessary to distinguish the independent issues concerning the validity of the notice, the effect of invalidity and the possibility of severance of the incorrect portion, it is convenient to consider more generally the relevant statutory scheme and the principles of statutory construction which inform the correct approach to each of these issues.
14 If there were anything in the national legislation which indicated how such a scheme should be construed, that too would be material to which the Court should properly have regard. Further, if it were suggested that the issues now raised involved questions of law which had been considered in other Australian jurisdictions, there would be much to be said for the view that this Court should generally follow such authority as was relevant to the consistent operation of a uniform national scheme: see Farah Constructions Pty Ltd v Say-Dee Pty Ltd [2007] HCA 22; 230 CLR 89 at [135]. However, although it is clear that various elements of the New South Wales Driver Licensing Act and the Road Transport (Driver Licensing) Regulation 1999 (NSW) ("the Driver Licensing Regulation") find close counterparts in the national scheme, the only matter which turns upon this for present purposes is the requirement that the provisions of the Acts Interpretation Act 1901 (Cth) apply to the Driver Licensing Act and the Driver Licensing Regulation: see Driver Licensing Act, s 5.
15 The notice given in the present case served two concurrent but separate purposes. The system by which demerit points accrue, as a result of the commission of driving offences, results in a statutory obligation on the Authority to "give a notice of licence suspension to the holder of a driver licence … who incurs 12 or more demerit points within the 3 year period ending on the day on which the person last committed an offence for which demerit points have been recorded against that person": Driver Licensing Act, s 16(2). Despite the wording of that provision, the Authority in fact has a discretion not to give such a notice in certain circumstances: see s 16(3). Licence suspension is not automatic upon the accrual of points, but depends upon the giving of a notice. Although the power of the Authority is described as an obligation to give a notice of suspension, rather than a power to suspend, it appears that the effect is the same as the conferral of an obligation to suspend, subject to a power not to act.
16 The Authority has a further power under the Driver Licensing Act to cancel or suspend a driver licence "because of an alleged speeding offence if, in respect of the alleged offence … the holder has paid a penalty prescribed for the purposes of Part 5.3 of the Road Transport (General) Act 2005": Driver Licensing Act, s 33(1)(a). The Authority is not required to give the holder of the licence an opportunity to show cause why the licence should not be cancelled or suspended (sub-s (2)) and:
"(3A) If a person's driver licence is suspended by the Authority under this section, the person's licence is suspended for such period as may be determined by the Authority and specified in a notice served on the person by the Authority."
17 The suspension of a licence under this provision is effected by a determination of the Authority to suspend for a specified period and the service of a notice on the licence holder. It may thus be seen that in respect of the powers under both ss 16 and 33, no suspension will be effected unless a relevant notice has been served on the licence holder. Under s 16, the notice is required to include specified information:
"(4) The notice of licence suspension must specify the date on which the suspension is to take effect and must contain any other matters specified by the regulations. The date specified must not be earlier than 28 days after the notice is given."
18 The Driver Licensing Regulation prescribes various further bases upon which the Authority may suspend a person's driver licence: see cl 38. It also prescribes what may be a "speeding offence" for the purposes of s 33(5) of the Driver Licensing Act: cl 38A. Clause 39 then provides in part:
" 39 Procedures for variation, suspension or cancellation of driver licence
(1) If the Authority decides to vary, suspend or cancel a person's driver licence, the Authority must give the person notice in writing of:
(a) the reasons for the proposed variation, suspension or cancellation, and
(b) any action that must be taken by the licence holder in order to avoid or reverse the variation, suspension or cancellation, and
(c) the date after service of the notice on which the variation, suspension or cancellation takes effect.
(2) The notice under subclause (1) must also state:
…
(b) in the case of a notice to suspend a person's driver licence, that if the licence is suspended, the person will not be authorised to drive a motor vehicle on a road or road related area for the period of suspension specified in the notice ….
…
(4) A driver licence is varied, suspended or cancelled in accordance with the terms of a notice served under this clause unless the Authority, by further notice in writing, withdraws the notice."
19 While a notice is required to specify the date from which it operates and the period for which it operates, there is no requirement analogous to the obligation under the Crimes (Sentencing Procedure) Act 1999 (NSW) in relation to the imposition of a sentence of imprisonment to specify the earliest day on which the offender will become entitled to be released on parole: see s 48(1)(b). Nor is there any provision analogous to s 48(3) of that Act stating that a failure to comply with the requirements of the section does not invalidate the sentence. Nevertheless, given the importance of precision and clarity in respect of periods involving a deprivation of liberty, it is significant that a sentence will not be invalidated by ambiguity in respect of its terms, or by failure to state correctly the earliest available release date: see Erceg v District Court of New South Wales [2003] NSWCA 379; 143 A Crim R 455 (McColl JA and Palmer J, Sheller JA dissenting).
20 Assistance in determining the proper approach to the validity of a notice may also be found in principles of construction concerning delegated legislation. On one view, the difference between a by-law proscribing certain activities and an order suspending a licence is merely the generality of the former, against the particularity of the latter, in relation to those bound to obey the command. Applying that approach, ambiguity or uncertainty is not a test of invalidity; rather, the instrument should be construed in accordance with relevant principles to determine its meaning: see King Gee Clothing Co Pty Ltd v The Commonwealth [1945] HCA 23; 71 CLR 184 at 195 (Dixon J).
21 Both the Commonwealth and State Interpretation Acts have provisions relating to compliance with prescribed forms: each provides that "substantial compliance" is sufficient: see Acts Interpretation Act, s 25C and Interpretation Act 1987 (NSW), s 80. It was not suggested in the present case that any form had been prescribed and, accordingly, no question of non-compliance arose. Nevertheless, these statutory provisions confirm that the proper approach is to consider whether the information required to be contained in a notice has been specified, without requiring it to be specified in some particular form. This approach was encapsulated in the proposition upon which the case was argued, namely that the notice would be invalid only if it specified two differing periods of suspension.
22 There was discussion in the submissions as to the need for a purposive construction of the legislation which, it appears to have been assumed, should be applied to the construction of the notice, reliance being placed upon the discussion in Project Blue Sky Inc v Australian Broadcasting Authority [1998] HCA 28; 194 CLR 355 at [69]-[71]. While no doubt the notice must be construed in its statutory context, it is itself neither a statute nor a legislative instrument of the kind being considered in Project Blue Sky. Nevertheless such an instrument is a "non-legislative instrument" for the purpose of s 46 of the Acts Interpretation Act and the Act therefore applies to the instrument as if it were itself an Act. If the instrument would otherwise be construed as being in excess of the power of the authority which made it, "it is to be taken to be a valid instrument to the extent to which it is not in excess of that power": Acts Interpretation Act, s 46(2). Provisions in similar, but not identical terms, are to be found in s 32 of the Interpretation Act (NSW). Although s 5 of the Driver Licensing Act expressly requires the application of the Acts Interpretation Act only in relation to the Driver Licensing Act and the Driver Licensing Regulation, it impliedly permits the application of the Commonwealth Act in relation to instruments under the Driver Licensing Act and the Driver Licensing Regulation.
23 In order to determine whether the notice conformed with the requirements of the legislation, it was, of course, necessary to consider its language in the context of its statutory purpose: cf Scurr v Brisbane City Council [1973] HCA 39; 133 CLR 242 at 251-252 (Stephen J, Barwick CJ, McTiernan, Menzies and Gibbs JJ agreeing). Scurr was concerned with public notification of a development application, the purpose of which was to permit members of the public to consider the proposed development and lodge objections, if they so wished. The consent authority was required to consider such objections before granting or refusing consent. Whether or not the notice complied with the statutory requirement that it set out "particulars of the application" needed to be determined having regard to its statutory purpose.
24 A further issue which can arise in circumstances where there has not been compliance with a statutory requirement is the effect on subsequent action. Whether non-compliance results in invalidity of the subsequent act will also need to be considered having regard to the statutory context: see Project Blue Sky at [97]-[100]. In the present case, that question did not give rise to any separate difficulty. The giving of a notice was necessary for the suspension of the licence to take effect. If there had been a failure to give notice in accordance with the statutory requirements, the licence was not suspended and the charge was properly dismissed.
25 Finally, it may be necessary to consider whether, if the notice were to be understood as suspending the respondent's licence for a period ending at midnight on 25 June 2007, the statement that he was entitled to drive on and from 27 June could be severed. In this respect, reference was made to Peters v Attorney-General (NSW) (1989) 16 NSWLR 24, approved by the High Court in Malubel Pty Ltd v Elder [No. 2] (1999) 73 ALJR 269 (McHugh, Kirby and Hayne JJ). Peters involved a number of warrants issued by a judge of the Supreme Court under the Listening Devices Act 1984 (NSW). They purported to authorise officers of the New South Wales Police and the Australian Federal Police to install listening devices. The submission that the Australian Federal Police could not validly be clothed with authority under the State Act was accepted: at 30C (Mahoney JA) and 35-36 (McHugh JA, Kirby P agreeing). McHugh JA further noted that a warrant was an instrument for the purposes of the Interpretation Act (NSW), s 32: at 41E, referring to Re Brian Lawler Automotive Pty Ltd and Collector of Customs (NSW) (1978) 1 ALD 167 at 171-172. In Re Brian Lawler at 172, Brennan J (sitting as President of the Administrative Appeals Tribunal) stated in relation to s 33(3) of the Acts Interpretation Act:
"Where, pursuant to a statutory power, an authority grants or issues an instrument other than a rule, regulation or by-law, the exercise of the power may well be an executive or administrative act rather than a legislative act. At all events, the granting or issuing of an instrument other than a rule, regulation or by-law is not necessarily an act of a legislative kind, and the granting or making of an executive or administrative instrument falls within the natural ambit of s 33(3)."
26 An instrument issued in the exercise of administrative power also falls, by parity of reasoning, within the provisions requiring that an instrument be upheld to the extent that it is within power. The principle of severance applies in relation to discrete elements of an instrument which can be excised without altering the meaning and effect of the remaining provisions and without creating an instrument which might not have been made if the maker had appreciated the proper limits of his or her power: see Peters at 41-42 (McHugh JA, Kirby P agreeing).
27 In the present case, severance is not an appropriate remedy if invalidity is established. That is because invalidity must depend upon the notice being read as a whole, conveying alternative inconsistent meanings. If the process of construction has not identified a dominant meaning, it is not appropriate for the Court to rewrite the notice so as to achieve that result. It follows that the sole question for the Court is the construction of the notice.