Vehicles keep getting larger and heavier. Increasing a vehicle’s size not only increases emissions, it also has important implications for pedestrian safety, increasing the risk of injury and death on the road. Many studies have looked at the predominant factors that heighten risk for pedestrians. A new study from the University of Hawaii analyzes both crash data and physical vehicle measurements, rather than focusing on vehicle types, to determine a leading factor in pedestrian death rates: the front-end height of a vehicle.