Deer-vehicle collisions cause significant animal suffering and human casualties, with prevention strategies including fencing, reflectors, and seasonal warning signs providing proven welfare benefits.
Road collisions cause traumatic, painful injuries to deer - broken legs, internal bleeding, and spinal damage are common outcomes for animals that do not die immediately on impact. Injured deer that escape into cover die slowly from their injuries over hours or days. Prevention is both welfare-sound and economically rational given the property damage and human injury costs of collisions. Integrated approaches combining seasonal warning signage, speed reduction, and wildlife crossing infrastructure address the problem most effectively.