Mandatory signs are visual indicators that communicate specific rules or requirements that must be followed. These signs are often used in public spaces, workplaces, and facilities to ensure safety and compliance with regulations. Common examples include signs that indicate the need to wear personal protective equipment or to follow safety protocols. These signs typically feature clear symbols or text that convey their message quickly and effectively. They are designed to be easily understood by everyone, regardless of language or literacy levels. By following the instructions on mandatory signs, individuals can help maintain a safe and orderly environment.