13 I shall, at this stage, make a general reference to penalties. The offence of dangerous driving causing death is very serious by reason of the loss of a life. It is recognised that the death has not been caused by an intentional act, but it is also recognised that it may have been caused by momentary inattention. For these reasons the penalties range from a fine or other non-custodial sentence to a term of immediate imprisonment, the maximum of which is 4 years. The approach to be adopted by the courts was referred to by Jackson CJ in Smith v The Queen [1976] WAR 97 at 107, this being a case heard shortly after the offence of dangerous driving causing death was introduced into the Traffic Act. His Honour referred to the fact that there are two broad categories of cases. The first is where the accident has arisen through momentary inattention or misjudgment, and secondly, those in which the accused has driven in a manner which has shown a selfish disregard for the safety of other road users or of his passengers, or with a degree of recklessness. It is clear that the case now being considered falls within the second category and there was present both a selfish disregard for the safety of the passengers, and a degree of recklessness. There could be no question that there must be an immediate custodial sentence. I would, however, regard the sentence as being one at the top of the range where there is no significant mitigatory factor. I say that for this reason. If it were higher, it would be well within the range of sentences for manslaughter. The offence of manslaughter involves similar concepts to the second category of offences of dangerous driving causing death namely a reckless disregard for life. The facts required to be proved are similar but the penalties are different. If a person is convicted of dangerous driving causing death instead of manslaughter, then it must follow that the convicted person is subject to a lesser range of penalties. The fact that the Crown accepted the plea of guilty to dangerous driving causing death means that it is accepted that the range of penalties must be on the lower scale. It is for this reason that I would see the sentence imposed as being at the upper level without any significant mitigatory factor reducing it. His Honour was very conscious of the mitigating factors and summed them up in the follow way: (AB144)