The Challenge to the Finding of Negligence
34 The basis upon which the appellant attacked the primary judge's finding of negligence was summarised as follows:
"12 The trial judge found … that the Appellant was negligent in failing to stop and check the road worthiness of his vehicle after hearing a loud bang whilst driving the vehicle. Inherently this finding required His Honour to be satisfied that the Appellant owed the Respondent a duty to stop and check the road worthiness of his vehicle in the circumstances. However such a finding enlarges any duty the Appellant owed to the Respondent to an unacceptable extent. The content of such a duty could not, for example, apply to the ordinary driver driving a motor vehicle in which there was no 2-way radio. Nor could it apply in circumstances where the Respondent was not a truck driver who could hear a warning but was simply an ordinary motorist who did not have access to such warnings. The finding of His Honour in relation to the duty owed by the Appellant to the Respondent is a finding of a subjective duty.
13 In Imbree v McNeilly (2008) HCA 40 the High Court held that the standard of care owed by a driver to someone who might foreseeably be injured by a lack of care is an objective standard. The Court emphasised that the duty does not vary with the particular aptitutde or temperament of the individual, but is to be applied uniformly [para 53] and [para 70].
14 The suggestion that every time a driver hears a noise of subjective description arising from an object striking the vehicle, he is duty-bound to pull off the road and come to a stop as soon as possible and thereafter inspect his vehicle for damage places an unreasonable and unduly onerous responsibility on all drivers. The Respondent himself agreed … that whether or not a responsible driver would be caused to stop by hearing a noise of something striking his truck depended upon what sort of noise it was, how loud it was and where the noise comes from".
35 I do not consider that the decision of the High Court in Imbree v McNeilly [2008] HCA 40; (2008) 236 CLR 510 is of assistance to the appellant. In that case, the High Court held that the standard of care which a learner driver owed the supervising passenger was the same as that owed by any other person driving a motor vehicle to take reasonable care to avoid injury to others. There is no question here of the appellant being subject to a standard of care different to that to which other road users are subject.
36 In considering breach of duty it is however relevant, indeed essential, to consider how a reasonable person "in the defendant's position" would have responded to an identified risk (Wyong Shire Council v Shirt [1980] HCA 12; (1979-1980) 146 CLR 40 at 47). In a case such as the present, involving a motor vehicle accident, the "position" of the defendant to be considered includes a multitude of circumstances, such as the type and characteristics of the vehicle which the defendant was driving and the prevailing weather conditions. The relevant circumstances in the present case also include the fact that the appellant had a two-way radio in his truck and that, as the evidence made clear, two-way radio was a common means by which truck drivers communicated with each other, including as to potential road hazards. Consideration of breach of duty required the primary judge to consider, as he did, whether and in what way a reasonable person in the position of the appellant would have used his two-way radio on the night in question. As was recognised at the conclusion of [14] of the appellant's written submissions (see [34] above) the response which a reasonable driver would have made to the circumstances in which the appellant found himself was dependent upon matters of fact and degree.
37 In the course of the appellant's argument on the appeal, attention was focused on the primary judge's finding that not only did the appellant hear a loud bang but also he felt a bump and must have observed more by the sound and his vehicle's performance than he was prepared to admit (see [29] above).
38 The reference to the vehicle's performance was to some traction loss and "some increase in engine revs which would have been able to have been heard". If these findings stood, it was clear in my view that, as the primary judge found, the response of a reasonable person in the appellant's position would have been to stop at the earliest available opportunity. It is necessary therefore to examine the findings.
39 The finding as to the occurrence of a loud bang reflected the appellant's evidence and accordingly there is no challenge to that finding.
40 The primary judge's finding that the appellant felt a bump was however challenged but in my view that challenge cannot be sustained. The finding was essentially a credit one with the appellant's oral evidence (see [25] above) needing to be evaluated in light of the police officer's 2004 note of the conversation with the appellant (see [25] above). It was well open to his Honour to act on the basis of the contemporaneous note rather than the oral evidence given over three years later.
41 The finding that there would have been some change in the performance of the appellant's vehicle which would have been noticed by him was challenged upon the basis that the primary judge referred to this being the effect of the evidence of both experts but, so the appellant submitted, that was not so.
42 I agree that this portion of the primary judge's reasoning overstates the evidence. Mr Griffiths, the appellant's expert, said that if the diesel fuel from the appellant's right side fuel tank dropped on to the road in front of his "drive tyres" (that is, those at the rear of the prime mover) there would have been a noticeable effect upon the performance of the vehicle. He did however say that there may not have been any noticeable loss of performance as the fuel might have been "thrown to the side", clear of the path of the appellant's truck's right side tyres (Report of 2 January 2008 p 3; Report of 8 May 2008 p 15). Mr Griffiths said in cross examination that "in the normal course of events" he would expect the relevant tyres to become coated with diesel oil sufficient to affect the performance of the vehicle but this does not put the point as highly as it is put by the primary judge who said that there "must have been some coating to" the appellant's tyres and that the appellant "must have observed more … in his vehicle's performance" than he was prepared to concede.
43 Similarly, the evidence of Mr Simpson, the respondent's expert, was not as strong on this point as suggested by the primary judge. His evidence in cross-examination included the following exchange:
"Q. The coating that you've given evidence about, that you've assumed occurred, would be only, even on your assumption, a coating to the first of the off-side tyres, would it not?
A. Would inevitably coat both to some extent, but certainly, the first one would get a real [bath].
Q. But you would still get drive from the second tyre, would you not?
A. Yes.
Q. And you'd get drive from the near-side tyres, would you not?
A. Yes
Q. Those factors may explain if the driver noticed nothing - why he didn't notice anything, do you agree?
A. Yes".
44 In these circumstances I do not consider that his Honour's conclusion on this point can be sustained, as it does not appear to have been arrived at with a full appreciation of the evidence.
45 Nevertheless, the primary judge's ultimate conclusion that the appellant was negligent in not stopping to inspect his vehicle at an earlier point of time did not rely, in its principal expression (see [30] above), upon any noticeable loss of performance of the vehicle. Rather, the judge relied upon what he described as "such a loud noise and the feeling of a bump, which must have been underneath the vehicle". He said that he accepted the evidence of the respondent and other drivers that these circumstances would have caused "a proper and reasonable driver to stop at the first available opportunity to inspect the underside of his vehicle".
46 The evidence of the respondent and other drivers to which the primary judge referred was evidence of the respondent, Mr Birrell (who was travelling north on the evening in question) and Mr Bishop (who was travelling south just in front of the respondent's vehicle) as to what they, as truck drivers, would do if they heard a "bang" on the underside of their vehicle whilst driving on a bitumen road. His Honour considered the evidence to be opinion evidence which was rendered admissible by s 79(1) of the Evidence Act. That section states that "[i]f a person has specialised knowledge based on the person's training, study or experience, the opinion rule does not apply to evidence of an opinion of that person that is wholly or substantially based on that knowledge". However, the evidence in question here did not in my view constitute evidence of any relevant opinion. It was simply evidence as to what other truck drivers, albeit experienced ones, would do in a particular situation, which did not in any event reflect the detail of the situation in which the appellant found himself. Moreover, the evidence was not of any practice in the truck driving industry which was contended to be relevant.
47 In these circumstances, it is necessary to disregard that evidence when considering the correctness of the primary judge's ultimate conclusions.
48 Nevertheless, the view I have arrived at is that the judge's conclusions were correct. That is not of course to say that every time the driver of a truck, or indeed any other motor vehicle, hears a noise of something hitting his or her vehicle whilst driving, the driver must stop and inspect the vehicle. Naturally, it depends upon the circumstances. The circumstances which lead me to conclude that in the present case the appellant should have stopped, as soon as he reasonably could, are as follows.
49 First, the appellant was driving a vehicle which, as the primary judge found, had vulnerable structures underneath it. As the judge said:
"There are many components underneath a vehicle which could be damaged by an object being thrown up in the manner that the [appellant] felt and heard and a number of these would be capable of causing either damage to the mechanisms of the vehicle and hence spillage, steering loss, power loss or some other response in the vehicle that may cause danger to other road users".
50 His Honour later referred to the appellant being aware after he heard the impact noise that "there was a risk of damage under the body of his prime mover that could affect a range of different working parts of the truck from air supplies, oil supplies, sumps, driving mechanisms or other matters that may bring about leakage, erratic driving or damage to the vehicle that in turn may endanger other road users".
51 Secondly, the appellant heard a noise of something hitting his vehicle. The judge described it as "very loud". The appellant described it as a "pretty loud bang", causing him to jump. For the noise to startle the appellant in this fashion the volume of the noise must have been significant. Also, as the judge pointed out, the nature of the damage indicated that the noise must have been significant.
52 Thirdly, the appellant felt a bump. In addition to the basis of challenge referred to in [40] above, the appellant challenged the finding that he felt a bump by relying upon evidence which he contended indicated that, because of the object's velocity and the angles involved, it would not have been possible for the damage to have been inflicted by an object over which the appellant's front tyres had run, forcing the object upwards and into the underside of the vehicle. This challenge must in my view fail because the judge's finding as to a bump was not dependent upon a view that the appellant's wheels ran over an object. On the contrary he referred to the bump resulting "either [from] the prime mover going over an object or the object striking the fuel tank causing a bump like sensation" (emphasis added). As pointed out above, the finding that the appellant felt a bump was well supported by the contemporaneous record of the police officer to whom he spoke shortly after the accident (see [25] above), the police officer having recorded the appellant as saying that he "Felt a Bump".
53 Fourthly, when it was put to the appellant in cross-examination that a prudent driver would have stopped a long time before the appellant did, the appellant volunteered: "I would have stopped if I had have thought it was damage to the underside of the truck, not [by a] rock to the side of the truck". This was a recognition of the vulnerability of the structures under the truck to damage in a way that might endanger the appellant, his truck or other road users. Although in his evidence given at the hearing in 2008, the appellant asserted that he had thought at the time of the accident in 2004 that the noise came from the side rather than the underside of the truck, the primary judge held that the noise must have come from underneath the vehicle. This was consistent with a statement of the appellant dated 24 October 2004 which said: "I heard and felt what I thought was a rock or similar hit the underside of the truck", without any suggestion in the statement that the appellant thought that the noise came from the side rather than the underside of the truck. Later in the statement he expressly said that he "heard something hit the underside". Whilst the statement was not signed by the appellant, there was evidence from the police officer who interviewed him, and prepared the statement, that the statement was read to the appellant over the telephone and that the appellant did not suggest that any changes needed to be made to it.
54 Fifthly, when the appellant heard reports on his radio of the respondent's accident and the slipperiness of the road at that location, he stopped his vehicle as soon as he was able and checked it for leakage. It was leakage of oil from the vehicle's sump for which he checked because he had understood a radio message which he had heard to refer to "oil", rather than diesel fuel, on the road. Nevertheless, the fact that when he heard the message, as he said in evidence, "he remembered the bang on the side of the truck" and thought that he should find somewhere to stop and make sure "my sump wasn't leaking and it wasn't my oil" is an indication that he thought that it was a realistic possibility that the noise he heard, and the bump he felt might have caused his vehicle to leak oil, or a similar slippery substance, on to the road.
55 Finally, in considering how a reasonable person in the position of the appellant would have responded to what occurred, it is relevant to note that there was no consideration, other than one of the limited inconvenience of breaking his journey and getting out of his vehicle in the rain, which pointed against the appellant stopping to check the condition of the vehicle. As the judge held, there were reasonably proximate places where the appellant could have stopped. The appellant has not shown that the judge was in error in that respect. The fact that Mr Bishop was able to stop his vehicle with no apparent difficulties at the location 300 metres past the site of the accident was compelling evidence in support of the finding.