Restrictions protect people from entering into potentially dangerous zones. By limiting access or deterring people and/or items from entering a building, street, or any public place, others are protected from harm and remain safe. Post Restriction Signs to inform and protect visitors and employees from entering into potentially dangerous situations. Some Restriction Signs communicate laws governed by the state you live in, such as Concealed Weapon Signs, while others permit No Smoking or Alcohol in specific locations. Other examples of signs that limit access are Do Not Enter, Authorized Personnel Only, Keep Out, and No Trespassing allowed.