Overwhelmed by prejudicial evidence

When is an error at trial insufficient to require an appeal court to quash a conviction?

The more the attention that is given to this question, the more difficult it is to answer. At least, that was the experience of appeal courts in the 2000s. Before then this question had gone largely unexamined, and appeals were decided with appellate courts deciding apparently intuitively whether miscarriages of justice were substantial enough to require the quashing of convictions.

I have considered this in discussing Weiss v The Queen [2005] HCA 81 on 16 January 2006, and see also the discussion of Grant v R (Jamaica) [2006] UKPC 2 on 20 January 2006. A difficulty was when should the appeal court act like a jury and consider the evidence and dismiss an appeal because despite the error at trial the evidence was sufficient to convict? See Bain v R (New Zealand) [2007] UKPC 33, discussed here on 11 May 2007.

The Weiss approach has been followed with minor adjustment in New Zealand: Matenga v R [2009] NZSC 18, discussed here on 9 July 2009.

An unattractive aspect of the Weiss approach is that it seemed to say that the appellate court may dismiss an appeal notwithstanding an error at trial if it considers that the evidence was sufficient to support a conviction. Obviously the ends (conviction of a person who is plainly guilty) cannot justify the means (never mind whether the trial was fair). To avoid that unpleasantness two requirements had to be met before a conviction could be upheld: the trial had to have been fair notwithstanding the error, and the evidence of guilt had to have been sufficient.

So, when does an error not affect the fairness of the trial? It is difficult to generalise without a definition of "fair trial". I tirelessly suggest one here.

Yesterday the High Court of Australia dealt with an appeal in which the errors at trial had been so substantial that it was unnecessary, indeed impossible, for the Court to address the sufficiency of the evidence: Patel v The Queen [2012] HCA 29 (24 August 2012). The appeal was allowed because no weight could be given to the verdict, the jury were overwhelmed by the prejudice created by the admission of evidence that, because of a change in the prosecution case, was inadmissible, and the proviso didn't apply: joint judgment of French CJ, Hayne, Kiefel and Bell JJ at [128]-[130]. Heydon J separately agreed, holding at [260] that there had been a departure from the requirements of a fair trial to such an extent that the court could not justly assess the strength of the case against the appellant, applying Gleeson CJ in Nudd v The Queen [2006] HCA 9, discussed here on 9 March 2006.

This seems to me to be a case where the unfairness was the rendering of the jury partial – that is, not impartial – through the introduction of evidence that would prejudice its judgment against the defendant.

Heydon J noted two difficult questions that did not have to be answered in this appeal [262]: to what extent should a judge disallow the introduction of evidence although no party objects to it, and when should a judge require the prosecution to provide particulars although they were not sought by the defence?

I suggest the answer to those is indicated by the meaning of a fair trial. But until judges get down to explaining what a fair trial means we are left to define it for ourselves.

I should add that in New Zealand we have revised the conviction appeal criterion by abolishing the proviso and defining miscarriage of justice to include errors that result in unfair trials: Criminal Procedure Act 2011, s 232 (not yet in force). Again, there is no definition of fair trial.

And now we are eight!

And that is 8 years of this site's existence.

It isn't really a blog in the sense of an invitation to readers to post comments. Instead it is an online casebook on criminal law. It now has commentary on over 500 cases from the leading appellate courts in New Zealand, Australia, Canada, the USA, the UK and the European Court of Human Rights.

My purpose is to promote scholarship and research in criminal law. For a given topic you can consult the Index which refers to the relevant cases and the dates on which commentary was posted. Or if you just want to know if there is commentary on a particular case, enter one word from its title in the search box on this page.

This site is not designed to make money, and there is no information here on how to contact me. It is just an attempt to show how interesting criminal law as a technical discipline can be. But it's not written anonymously because commentary needs to be responsible and readers should have an opportunity to assess the author's qualifications.

I have given the Blogger version of this site (http://www.nzcriminallaw.blogspot.com ) a title that now includes the word casebook; the mirror site retains its old title as I haven't figured out how to change it (http://www.donmathias.wordpress.com ).

When can one defendant rely on another defendant’s statement to the police?

If two defendants, A and B, are on trial together, when can A rely on part of B's statement to the police if B does not give evidence?

Broadly, once evidence is admissible it can be used for all purposes at trial unless there is a specific restriction: Hart v R [2010] NZSC 91 at [54]. Does s 27 of the Evidence Act 2006 provide for a restriction? Its first subsection says:

"Evidence offered by the prosecution in a criminal proceeding of a statement made by a defendant is admissible against that defendant, but not against a co-defendant in the proceeding."

Does this prevent the defence "offering" it? ("Offer evidence" is defined inclusively and widely in s 4.) Plainly no, although this has been controversial. Difficulties have concerned the meaning of "against". The answer seems to be that which is given in Leslie-Whitu v R HC Rotorua CRI-2009-263-163, 5 October 2011, Woolford J (not available online): s 27 does not prevent A relying on B's statement, but the statement is hearsay in relation to A. Since the evidence in relation to A must be considered separately from that in relation to B in a joint trial, A must rely on the hearsay provisions to get B's statement admissible in his case. As hearsay the rule is that it would be inadmissible, but there are exceptions, the main one of which is s 18 of the Evidence Act 2006.

The criterion in s 18 when B is unavailable, as he would be if he chose not to give evidence, is that "the circumstances relating to the statement provide reasonable assurance that the statement is reliable". The "circumstances" are defined in s 16.

I don't know whether that is the best answer. It creates an uneven playing field in that to use B's statement A must overcome the "reasonable assurance" of reliability threshold in s 18, whereas the usual requirement for admissibility is relevance, s 7, which has a low threshold: Wi v R [2009] NZSC 121, mentioned here on 11 August 2012. If the prosecution can get the statement admitted under s 27 (overcoming any objections based on unreliability, s 28, oppression, s 29, and impropriety, s 30) then A should be able to use it too without further restriction.

I suggested in a New Zealand Law Society Seminar that arguably the admissibility of B's statement for A's case should be governed by the common law fairness considerations.

Yesterday the High Court of Australia touched upon this in a common law context: Baker v The Queen [2012] HCA 27 (15 August 2012). However here B's statement did not really exculpate A: see Heydon J at [70]-[76]. But basically the Court said, "Aw fieck orf moit" (I assume Australians all sound like Hughsey).

The case illustrates how the common law has diverged in various jurisdictions. Canada and England (see Baker at [54], [88]) have expanded the hearsay exceptions to permit use of B's statement by A if it is apparently reliable, but as the judgments in Baker show, there are difficulties in establishing reliability in this context.

I still think use of the hearsay exception here is inappropriate because it is only by chance that B's statement is hearsay – at least under our statutory definition of hearsay which does not include within it statements made previously by a witness (see the definition of "hearsay statement" in s 4). If B gives evidence he is a witness so it is not hearsay, whereas if he does not give evidence it is. Should the trial tactics of one party govern the admissibility of evidence for another? And if the prosecution can rely on B's exculpation of A and argue it is a lie demonstrating B's guile, why can't A rely on it and argue it is a glimpse of B's truthfulness?

The common law position is different because the definition of hearsay is not dependent on whether the maker of the statement, B, gives evidence. Baker remains of interest for its emphasis on the difficulties in applying a criterion of reliability.

Scholarly and incite-ful

A small but fascinating point of general interest arises in The Queen v Khazaal [2012] HCA 26 (10 August 2012). If a defendant has the evidential burden of showing an innocent purpose, can evidence of general good character be sufficient to meet that burden?

The defendant in Khazaal compiled articles from other authors, edited them with his own introduction and published them under a pseudonym as an electronic book. The book contained advocacy of violence, but Mr Khazaal had a statutory defence if his publication was not intended to facilitate assistance in a terrorist act (see [48] and [51] of the joint judgment). The evidential burden here means the burden of adducing or pointing to evidence that suggests a reasonable possibility that his purpose was innocent.

Mr Khazaal suggested that his purpose was scholarly and peaceful, and he relied partly on the book itself to meet his evidential burden. The High Court unanimously held that the evidence relied on was not inconsistent with the alleged purpose of facilitating violence (French CJ at [19], Gummow, Crennan and Bell JJ at [77], Heydon J at [110]). Mr Khazaal also relied on his past pursuit of lawful activities as a journalist and argued that the book was written in that vein, however there was insufficient evidence to support that connection [111].

So, more generally, when does evidence of good character tend to prove a matter in issue? The New Zealand Supreme Court looked at this in Wi v R [2009] NZSC 121, holding that absence of previous convictions has sufficient probative force to meet the requirement of relevance (s 7 of the Evidence Act 2006) but in a particular case it may have only a slight tendency to prove a matter of consequence [19]. I mentioned Wi in the update to my note on Maye v R (Jamaica) [2008] UKPC 35.

Just a little bit of probative value is sufficient to meet the relevance requirement. This does not mean that almost anything goes, because the court can exclude evidence under s 8 if its prejudicial effect outweighs its probative value. Would that little bit of probative value be sufficient to meet the evidential burden of raising a defence? How much "tendency to prove" does the evidential burden require. Probably this is best expressed as a tendency sufficient to raise a reasonable possibility that the issue favours the defendant.

Here we drift further from the facts of Khazaal, like French CJ's ships passing in the night [12]. Imagine that 10% of scholars support violence, and 90% do not. Does evidence that D is a scholar mean that we can be 90% sure he does not support violence? Of course not. Relevance must not be confused with probative value. Yes, evidence that D is a scholar is relevant in the sense that D is using it to support the proposition that it tends to suggest he is not advocating violence. But the probative value (ignoring the separate question of rebuttal by evidence that D's actual writing did in fact advocate violence) of being a scholar requires consideration of different things.

First, one looks at the population of people who advocate violence, and asks what proportion of them are scholars. Then one looks at the population of people who do not advocate violence, and asks what proportion of them are scholars. This allows one to compare the proportion of scholars among the advocates of violence with the proportion of scholars among peaceful people. That tells one whether being a scholar is more consistent with advocating violence than it is with being peaceful. The probative value of the fact of D being a scholar is this comparison of proportions.

This is not how judges reason, but the result is the same in Khazaal. French CJ pointed out that mere consistency with innocent purpose is insufficient to tend to prove innocent purpose [18]-[20]. That is, scholars exist in both the population of advocates of violence and peaceful people, and their existence among peaceful people does not of itself have probative value for the proposition that D was peaceful. I suspect that he was wrong to adopt McClennan CJ at CL's phrase "the evidence ... was entirely neutral", because really the evidence was incomplete: it needed a context. The Court wanted more information about D's scholarly writing and about whether that was consistent with the writing which was the subject of the allegations.

It is appropriate to reject general probabilistic reasoning when specific evidence relevant to a particular case can be obtained. This is the Schrödinger's cat metaphor: once the box is opened and we look inside, the cat's being dead or alive is no longer a question of probabilities. If D kept the box closed, he needed to assist the court more with probabilities, and if he opened the box, he needed to demonstrate that this writing was in line with his other work.

Delay and its various remedies

The Privy Council has recently corrected any impression that may have existed about when unreasonable delay should result in the staying of proceedings or the quashing of a conviction: Tapper v DPP (Jamaica) [2012] UKPC 26 (17 July 2012).

The quashing of a conviction is only appropriate where delay prevents a fair trial or where delay makes it unfair to put the defendant on trial at all: Boolell v The State (Mauritius) [2006] UKPC 46 (noted here on 18 October 2006).

Other remedies may be the reduction of a sentence or if the defendant is acquitted the payment of compensation, the making of a public apology, or the expediting of a trial without further delay: Attorney-General's Reference No 2 of 2001 [2003] UKHL 68 per Lord Bingham at [24]-[25], applied in Tapper.

Issue estoppel and sentencing facts

A routine application of issue estoppel, applying R v Mahalingan [2008] SCC 63 (noted here on 15 November 2008) is R v Punko, 2012 SCC 39. In a multi-issue trial it could not be said that there was the necessary logical connection between the verdict and the issue now before the court, so there was no estoppel.

More interesting is the only point that divided the Court: Fish J disagreed with the majority judgment delivered by Deschamps J on whether a judge's finding of fact at sentencing could in principle give rise to issue estoppel. The majority held that it could not, because it was not a decision on the merits, that is, relevant to verdict, and issue estoppel requires a logically necessary conclusion that the jury were unanimous on the issue [11]-[12]. At sentencing the judge makes findings of fact to elucidate the jury's verdict of guilty, but in relation to counts on which the jury acquitted the defendant the judge in sentencing on the guilty verdicts has no power to make a finding binding on future judges [12].

Fish J, who agreed with everything else, considered that the sentencing powers of a judge included the power to find any relevant fact that was disclosed by the evidence, and that the question whether a fact found at sentencing could give rise to issue estoppel should be left open as a matter of principle [26]-[27].

One would have thought that if a sentencing judge finds a particular fact to have been proved beyond reasonable doubt, the issue is settled and the estoppel should apply.

Punko illustrates the narrowness of issue estoppel. Deschamps J did comment on how the doctrine of abuse of process could come into play if the prosecution's conduct were to be found to be "sufficiently egregious" [21]. In commenting on Mahalingan I noted that abuse of process can be of more use than issue estoppel in criminal law, if only the courts will get to grips with giving it meaning instead of dismissing it as something too vague.

Appellate error and wit

In the spirit of helpfulness ...

Don't rely on what our Court of Appeal said in Tutu v R [2012] NZCA 294 (5 July 2012) about there being a right to elect trial by jury on charges of common assault and assault on a constable in the execution of duty [19]. Section 43 of the Summary Offences Act 1981 removes that right.

For an insight into appellate advocacy and bench-bar exchanges, with occasional flashes of wit, in the High Court of Australia, see the perhaps rather irreverently-named http://shitjudgessay.tumblr.com .

Association with criminal groups

Some comments of general interest on criminal organisations or what are sometimes called organised criminal enterprises or organised criminal groups, were made by the Supreme Court of Canada in R v Venneri, 2012 SCC 33 (6 July 2012).

"[40] ... focus on the goal of the legislation, which is to identify and undermine groups of three or more persons that pose an elevated threat to society due to the ongoing and organized association of their members. All evidence relevant to this determination must be considered in applying the definition of "criminal organization" adopted by Parliament. Groups of individuals that operate on an ad hoc basis with little or no organization cannot be said to pose the type of increased risk contemplated by the regime.

"[41] Courts must not limit the scope of the provision to the stereotypical model of organized crime ― that is, to the highly sophisticated, hierarchical and monopolistic model. Some criminal entities that do not fit the conventional paradigm of organized crime may nonetheless, on account of their cohesiveness and endurance, pose the type of heightened threat contemplated by the legislative scheme."

Deciding whether there is a criminal organisation or an organised criminal group is a preliminary step. Liability for an offence depends on what conduct by a defendant is proscribed in relation to the organisation or group. Canada has defined several such offences, which broadly involve committing offences for the benefit of, or at the direction of, or in association with the organisation, or being a member of such an organisation and instructing any person to commit a qualifying offence for the benefit of the organisation. Also included are offences of participation in or contributing to the activity of the organisation with the purpose of enhancing the ability of the organisation to commit a relevant offence.

In New Zealand we have the offence of participation in an organised criminal group, if – again broadly - the defendant knows that his conduct contributes to achieving an objective of the group or to the occurrence of any criminal activity, or is reckless as to that contribution. The defendant need not share the objectives of the group.

It is not necessary that the organisation or group has actually committed any substantive offence, and contributing to achieving the objective of the group may not necessarily involve inciting or any other form of secondary liability.

Venneri highlights the point that associating with the organisation can occur through the defendant's offending and his membership is not required. So where the defendant supplied cocaine to a member of a criminal organisation, knowing that it was involved in drug trafficking, he was operating in association with the organisation, there was a sufficient nexus between the organisation and the defendant's supply of the drug.

Law reform by stealth

Sometimes the implications of law reforms or new legislation dawn on me rather slowly. This can happen to other people too, thank goodness, especially where controversial aspects of the proposed reforms distract attention from something more subtle but profoundly disturbing. So it is with ... [Note: the first part of this posting, down to the "Update" has been published in NZ Lawyer, Issue 188, 13 July 2012, copyright LexisNexis NZ Ltd - no longer available online as NZ Lawyer has a new publisher.]

Search on suspicion

The Search and Surveillance Act 2012, s 6 (not yet in force) will allow a search warrant to be issued on suspicion that a relevant offence has been committed, is being committed, or will be committed. This suspicion must be on reasonable grounds.

The reasonable grounds requirement looks like a safeguard. But the current law requires reasonable grounds for believing that a relevant offence has been committed or will be committed: s 198 of the Summary Proceedings Act 1957. The higher threshold of belief in s 198 is replaced by suspicion in s 6.

Certainly s 198 is not perfect. The new law improves it by referring to offences that are being committed. There is also a complexity in s 198 because it includes reasonable grounds for believing that a relevant offence is suspected of having been committed. But that has not been the subject of careful judicial analysis, and the case law has focused on the difference between belief and suspicion that an offence has been committed. In the leading case, R v Sanders [1994] 3 NZLR 450, (1994) 12 CRNZ 12 (CA) the universal requirement of s 198 was held to be belief on reasonable grounds both in relation to the offence and to the finding of the evidence.

Both s 6 and s 198 require reasonable grounds to believe that evidence of the relevant offending will be found at the place to be searched.

The Law Commission recommended that the threshold of reasonable grounds for belief should apply both to the offending and to the finding of evidence. In NZLC R97 (2007) "Search and Surveillance Powers" the Commission said (Recommendation 3.1):

"There should be a standard statutory threshold for the exercise of general law enforcement powers of search. That threshold should be reasonable grounds to believe that an offence has been, is being, or is about to be committed, and that evidential material is in the place to be searched. That test should be departed from only where there is a compelling case to do so. Current provisions where the lower threshold can be justified and should be retained include sections 60 to 61 of the Arms Act 1983 and search powers relating to border control offences under the Customs and Excise Act 1996."

The Search and Surveillance Bill was so extensive and contained so many controversial measures that submissions do not seem to have focused on what has become s 6. I didn't notice it myself. Either everyone thought it was alright, or everyone overlooked it. There is no mention of it in the minority views in the Justice and Electoral Committee's report on the Bill.

The courts certainly think the distinction between reasonable grounds to believe and reasonable grounds to suspect is significant. See Collins v R [2010] NZSC 3 at [2]. In Britten v R [2012] NZCA 81 at [15], Priestley J for the Court cited R v Williams [2007] NZCA 52, [2007] 3 NZLR 207 at [213]:

"Having "reasonable grounds to believe", the test under s 198 of the Summary Proceedings Act, is a higher standard to meet than "reasonable ground to suspect", the test under s 60(1) of the Arms Act for example (see R v Karalus (2005) 21 CRNZ 728 (CA) at para [27]). Belief means that there has to be an objective and credible basis for thinking that a search will turn up the item(s) named in the warrant (see Laugalis (1993) 10 CRNZ 350 (CA) at pp 354 – 355), while suspicion means thinking that it is likely that a situation exists. The issuing officer must hold the view that the state of affairs the applicant officer is suggesting actually exists (see Sanders [1994] 3 NZLR 450
at p 461)."

The distinction is important too where there are powers of search without warrant. For example s 18(2) of the Misuse of Drugs Act 1975 permits warrantless search where there are reasonable grounds for believing in both the occurrence of a relevant offence and the presence of evidence. However s 20 of the Search and Surveillance Act 2012 replaces that with a power to search without warrant where there are reasonable grounds to suspect the commission of a relevant offence. (I note in passing that it is strange, given the opportunity to improve the law, that s 20 retains the rather technical and unrealistic requirements of s 18(2) as to identity of drug, particularly in view of the difficulty that they had caused the prosecution in Hill v Attorney-General (1990) 6 CRNZ 219 (CA)). The significance of the high threshold for warrantless search was emphasised in Hill by Richardson J at p 222:

"Search without warrant is a very special exception to the general principle that police officers must satisfy a statutory officer that they have reasonable grounds for believing justifying the issue of a warrant authorising their entry to and search of private property. As Sir Thaddeus McCarthy put it, "New Zealanders have been cautious in our grants of powers to the police", citing Lord Devlin's observation that:

"It is because the British have learnt to measure out stingily their grants of authority so that it is just enough and no more that they have, perhaps more successfully than any other nation, held the balance between order and freedom"

("The role of the Police in the Administration of Justice", Clark, Essays on Criminal Law in New Zealand, p 173.)"

We now seem to be intent upon eroding this general principle of requiring a belief, and a reasonable belief at that. Does our legislature's eagerness to grant powers to the police really reflect New Zealanders' wishes? Recent high profile searches have arguably given fresh life to Sir Thaddeus's reflections. We should reconsider this issue.

[Update] After I posted the above comments a colleague drew my attention to a recently published New Zealand Law Society Seminar Paper on the Search and Surveillance Act. There, the authors review the changes made to the grounds for issuing search warrants, in particular under s 6, and they conclude that the provision is balanced:

"Law enforcement needs are met by not requiring an overly high factual foundation for the commission of a crime to trigger investigative powers. But human rights, and in particular the right to be free from unreasonable search (and by extension having reasonable expectations of privacy respected) are upheld by requiring a more significant factual foundation for those investigative powers to operate on a particular place or person, etc."

It doesn't surprise me that this was written by two prosecutors. They wrongly suggest that the belief as to the existence of the evidence is a protection of human rights and they overlook the erosion of the same rights created by the "[not] overly high factual foundation" of suspicion. It is easy to see that the belief in the presence of the evidence at a specified location is readily established: for example, if a reliable witness saw items being taken into a stated address, the reasonable grounds to believe they were there would be made out. That would say nothing about the requirement of the items being evidence of an offence, which is, under s 6, easily met by other information that gives rise to a suspicion of criminal activity. It is this element that protects - or should protect - reasonable privacy expectations.

It is fair to expect confirmation of my assertion that reasonable grounds to believe that a specified offence has been committed are required by s 198. In Rural Timber Ltd v Hughes [1989] 3 NZLR 178 (CA) the Court included in its description of the effect of s 198 the following:

"The application and warrant should specify which of those lettered paragraphs [(a), (b) and (c) of subsection (1)] is involved. Generally speaking as many of them as it is proper to invoke should be invoked and a proper foundation should be laid for the necessary reasonable grounds for belief in respect of each paragraph invoked. In almost all cases where the issue of the warrant is justified paragraph (b) is likely to apply; paragraph (a) is generally somewhat less likely to be engaged while paragraph (c) is probably the least likely to apply in the general run of cases"

And the form prescribed for search warrants, Form 50 in Schedule 1 to the Summary Proceedings Act 1957 materially as to paragraph (b) states:

"To every constable ... I am satisfied ... that there is reasonable ground for believing that there is in [the specified place, specified things] ... which there is reasonable ground to believe will be evidence as to the commission of an offence of [specified] ... ."

This applies the standard of reasonable grounds to believe to both the presence of the evidence in the specified place and to the link between it and the commission of a relevant offence.

A search authorised on lesser grounds, such as suspicion that a relevant offence has been committed and that the thing searched for will be evidence of that offence, will be a limitation on the right to be free from unreasonable search: s 21 New Zealand Bill of Rights Act 1990 (BORA).

Yet, on 12 June 2009 the Crown Law Office advised the Attorney-General that the search powers in what was then the Search and Surveillance Bill (now enacted, including s 6) did not give rise to unreasonable search and seizure in terms of s 21 of BORA. That ignores the restriction of the meaning of unreasonable search that is required for the new law to be accommodated. Unreasonable search will no longer include searches based on grounds that only amount to suspicion. The advice did not specifically address the terms of what is now s 6.

The Law Commission advised the Justice and Electoral Committee, which reported to Parliament on the Search and Surveillance Bill, that what is now s 6 does not substantively change the grounds for issuing a search warrant. (See the Interim Report on the Search and Surveillance Bill 45-1, p 10.) But s 6 is inconsistent with the Law Commission's Recommendation 3.1 quoted above which in turn is consistent with s 198. Plainly the point was overlooked, as there was so much in the Bill requiring consideration.

What are the mental elements of dangerous driving?

Dangerous driving is risk-based, not negligence-based: King v The Queen [2012] HCA 24 (20 June 2012). It is not necessary to ask whether there has been a sufficiently great level of negligence to attract criminal rather than merely civil liability. Such negligence could be sufficient if it reached a high enough level, but it is not a necessary ingredient of dangerous driving. So, on the 3-2 majority's reasoning in King, the judge had not been wrong to direct the jury that the prosecution did not have to prove criminal negligence [48], [50].


The appellant submitted that the judge had steered the jury away from what in the context of the trial was conviction on the lesser offences. More serious than dangerous driving causing death were the offences on which he had been convicted, culpable driving causing death. The judge, said the appellant, had given the jury the impression that dangerous driving causing death was too trivial an offence to reflect his culpability, as it didn't even require criminal negligence. In diminishing the seriousness of dangerous driving (here, the conviction sought by the defendant) the judge may have conveyed to the jury that the more serious offence of culpable driving could more easily be committed.


You can see that while the judge had "not been wrong" to direct the jury that criminal negligence did not have to be proved for dangerous driving, at the same time a direction that criminal negligence was required would also have been correct in the circumstances. Such negligence would be sufficient, albeit not necessary for liability. The majority should have held that the judge was wrong in the context of the evidence. The minority, Heydon and Bell JJ, would have allowed the appeal on the grounds that this had been a misdirection which had created a substantial miscarriage of justice because the defendant may have been deprived of a more favourable verdict. They substantially agreed with the majority on the elements of dangerous driving.


When a court asks whether the driving in question demonstrated a marked departure from the standard of care that a reasonable person would observe in all the circumstances (R v Roy, 2012 SCC 26, discussed here on 15 June 2012), it is focusing on one sort of dangerousness: that which is accompanied by negligence. Usually examples of dangerous driving will involve some degree of negligence, above a minimum level (marked departure from the reasonable person's standard of care), and this can include even momentary inattention in circumstances where particular care and attention are required (King at [46]). However negligence is not an element of dangerous driving (Bell J [94]), just as (this is me now, not Bell J) stabbing is not an element of murder. But just as in the circumstances of a given case stabbing may have to be proved to secure a conviction for murder, so too negligence may have to be proved to secure a conviction for dangerous driving.


It is inevitable that jurors will have to assess the driving in the instant case against an imagined scale of qualities of driving. Somewhere on the scale careless driving becomes dangerous driving, and somewhere else on the scale dangerous driving becomes a more serious offence. The statutory context is always important. The extent to which the defendant departed from the objective standard required by the law for all drivers has to be assessed (Bell J at [74]). It is of no use to tell jurors that the defendant's driving must be such as to "merit criminal punishment" (Bell J [74], Heydon J [68]) because the criterion for guilt should not be left to jurors but rather is for the law to lay down. The criterion is whether the manner of driving gave rise to potential danger in a real sense to a person in the vicinity (French CJ, Crennan and Kiefel JJ at [46], applying Barwick CJ in McBride v The Queen [1966] HCA 22, (1966) 115 CLR 44). Plainly, in assessing responsibility for dangerous driving it is necessary to compare the level of danger to that required for liability for comparable offences. This does not mean that comparison with civil law negligence is useful: Bell J at [102].


Bell J stated [92] the mens rea requirement for dangerous driving as being confined to "the intention to do the acts involved in driving". She said that liability is subject to an objective test, citing the old case R v Gosney [1971] 2 QB 674 at 679. But in Gosney D 's conviction was quashed because she had made the same mistake as a reasonable driver would have made, and the Court of Appeal held that dangerous driving was not an offence of strict liability (for this point I rely on my 1978 Fourth Edition of Smith and Hogan, Criminal Law, pp 88-89). Bell J's dictum on mens rea is difficult to reconcile with negligence being a sufficient but not a necessary condition for liability.


By comparison, the Supreme Court of Canada required in Roy, above, mens rea elements of either an unreasonable failure to recognise a risk of the required kind or an awareness of the actual risk created by the driving and a deliberate running of that risk. The culpability or fault requirement inherent in the notion of mens rea is generally said to consist of either intention or recklessness as to the essential factual elements of an offence. But the meaning of intention in criminal law is context-dependent, sometimes extending to consequences and sometimes not.


Since we are not allowed to include criminally negligent failure to recognise danger as an element of the offence, we must slip it in as a relevant consequence under intention. The mens rea elements of dangerous driving here would therefore be: either intention to drive with knowledge of the danger created by the manner of driving, or intention to drive accompanied by a failure to appreciate the danger that a reasonable person would recognise as being created by the manner of driving.