Halsey v Weydling

This matter concerns an application for special leave to appeal to the High Court of Australia from a decision of the Full Court of the Supreme Court of South Australia. The dispute arose from a road traffic incident in Adelaide involving a collision between a motor car and a pedestrian. The applicant was the motorist, and the respondent was the pedestrian.

The legal issues before the High Court involved an assessment of liability and damages. The primary judge, Justice Duggan, had found both parties negligent and apportioned 60 per cent of the blame to the motorist. However, the Full Court of the Supreme Court altered this apportionment, finding that 60 per cent of the blame lay with the pedestrian. Furthermore, the Full Court differed from the primary judge's assessment of damages, which had been approximately $1.5 million, reduced to about $1 million on appeal. A key point of contention related to the pedestrian's pre-existing mental condition and whether it should have been considered in the apportionment of blame.

The applicant argued that the Full Court erred by not taking into account the pedestrian's pre-accident mental intellectual retardation when considering the apportionment of contribution. The Full Court had found that the pedestrian suffered severe perinatal brain damage, which was exacerbated by the accident, and that this pre-existing condition should have been considered in assessing the pedestrian's contribution to the collision. The applicant contended that the Full Court's finding of pre-accident mental retardation should have been brought to account in the contribution assessment. The Full Court's reasoning, as articulated by the Acting Chief Justice, suggested that the pedestrian acted with "reckless disregard for his own safety" and that his conduct was "fool hardy or hazardous in the extreme."

The application for special leave was sought on both liability and damages. The applicant's case was that the Full Court's finding of pre-accident mental retardation should have been considered when apportioning blame. The Court noted that the issue of pre-existing mental retardation was not part of the primary case argued before the Full Court, but arose during argument when the Acting Chief Justice inquired about the appropriate standard for contribution, referencing the High Court authority of *McHale v Watson*.