Where a driver breaches a prescribed speed limit in a school bus zone and a pedestrian is killed, causation is to be assessed by reference to the entire period of negligent driving through the zone, not merely at the moment the pedestrian becomes visible or at the point of impact. Mobbs v Kain does not preclude a finding of causation where the driver was exceeding (rather than complying with) the prescribed speed limit and compliance would have allowed the pedestrian to cross safely. The 'but for' test applied to the entirety of the breach, rather than a snapshot at the moment of collision, is a legitimate and common-sense approach to causation.
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