Signs in the public environment refer to signs and markers set up in public places, workplaces, transportation facilities and other places, whose purpose is to convey a variety of prompts, prohibitions, warnings and other information to people through text, color, shape, pattern and other ways. Generally include the following contents:

1. The name of the place: The basic role of the sign is to tell people what the place is. Therefore, every sign must clearly indicate the name of the place to avoid confusion and misunderstanding.

2. Service facilities: On the identification sign of the place, it is necessary to list the service facilities and products provided by the place. For example, in addition to marking the name and location of the mall, the logo of the mall should also mark the products and services provided by the mall, such as food, entertainment, shopping, etc.

3. Directions: Signage must provide clear directions to guide people to the correct destination. For example, signs placed in subway stations need to indicate the direction of each subway line and the name of the station.

4. Safety tips: In some places where there may be security risks, signs need to provide corresponding safety tips. For example, signs on the highway need to mark speed limit signs, road warning, sharp turns and other information to enhance the safety awareness of drivers.

5. Prohibited tips: In some places, especially in public places, in order to maintain order and safety, signs need to provide relevant prohibited tips. For example, signs in schools and libraries need to tell people which behaviors are not allowed, such as smoking, littering, Shouting, etc.

To sum up, the content of the public environment sign contains the name of the place, service facilities, direction instructions, safety tips and prohibited tips, etc., the purpose is to better serve people and maintain public order and safety.