What slogans and warning signs should be installed in the construction tunnel?

To summarize, there are several main categories:

1. Prohibition signs: including construction vehicle speed limit signs, idlers-free signs, no smoking, etc.;

2. Warning signs: for example, watch out for high-voltage electricity signs, pothole signs, etc.;

3. Instruction signs: for example, you must wear a safety helmet;

4. Reminder signs: for example, fire extinguishers Location;

In addition, some signs can be set according to the specific conditions and requirements of the construction site.

Hope it helps.