Provide sterile injection equipment and often other treatment and referral services to people who inject drugs; also called needle or syringe exchange programs and needle syringe programs
Set the number, type, proximity, and density of tobacco retailers, especially near homes and schools, via state or local zoning, licensing restrictions, or other regulations
Restrict full contact between youth football players via limits to the number of contact practices, head hits per player, delay tackling until a certain age, etc.