Hatziandoniou v Ruddy

The appeal in *Hatziandoniou v Ruddy* concerned a motor vehicle accident between a truck and a motorcycle. The central dispute revolved around which party was on the incorrect side of the road at the time of the collision, and consequently, who was liable for the resulting personal injuries. The case was heard in the Court of Appeal of New South Wales.

The Court of Appeal was required to determine two primary legal issues. Firstly, whether the trial judge erred in excluding certain portions of the expert evidence tendered by the appellant, specifically concerning the reconstruction of the accident. Secondly, the Court had to consider whether the trial judge erred in the quantification of future economic loss awarded to the appellant.

Regarding the exclusion of expert evidence, the Court held that the trial judge had taken an unduly narrow approach to the application of section 79(1) of the *Evidence Act 1995* (NSW). The Court reasoned that expertise, derived from training, study, or experience, enables a person to extrapolate from general principles to specific circumstances, and that the excluded opinions, being based on such specialised knowledge, ought not to have been rejected. On the issue of damages, the Court found that the trial judge's allowance of a buffer for future economic loss was appropriate, given the difficulty in accurately quantifying the extent of the appellant's impairment to earning ability after a 15-year absence from his engineering career.

Consequently, the Court of Appeal allowed the appeal, set aside the verdict and judgment of the trial court, and ordered a new trial limited to the questions of the respondent's liability and contributory negligence.