Police tape is shown in Toronto on May 2, 2017. Accidents in which children die while stranded in hot cars may be more common than people realize, but the authors of a study probing the issue said there are numerous practical habits parents can adopt to ward off such tragedies. The study from the Hospital for Sick Children concluded an average of one child a year dies across Canada after being trapped in an overheated vehicle, usually because a parent or caregiver forgot they were inside.ago. THE CANADIAN PRESS/Graeme Roy