The respondent was injured when a spider rope, left secured to a guardrail by the appellant's employees, was released by an unknown vandal and struck her car on the highway below.
The trial judge found the appellant liable in negligence for failing to meet industry standards to prevent tampering.
On appeal, the Court of Appeal held that while a duty of care was owed, the trial judge erred in finding a breach of the standard of care.
The intervening act of vandalism was not reasonably foreseeable given the lack of prior incidents and the location of the work.
The appeal was allowed and the action dismissed.