Roads kill billions of animals globally each year, and proven engineering solutions can dramatically reduce mortality with investment in appropriate infrastructure.
Road mortality represents one of the largest chronic sources of animal welfare harm globally. Animals struck by vehicles experience traumatic injury with a range of outcomes from immediate death to slow death from internal injuries, or survival with permanent disability. The welfare case for wildlife crossing infrastructure is overwhelming — crossings reduce suffering at scale, have measurable effectiveness data, and in high-traffic areas deliver economic benefits through reduced vehicle damage and accident costs. The barrier is investment, not technical feasibility. Integrating crossing requirements into road planning codes is the most effective policy lever.