What are the safety signs for high voltage?

the prohibited signs are: "No closing, someone is working!" "No closing, there is someone working on the line!" . The allowed signs are: "Work here!" "From now on!" . Warning signs include: "Stop, high pressure danger!" "No climbing, high pressure danger!" . The size, words and background color of the signboard stipulated by the state are strictly regulated. If necessary, there should be some corresponding signs, such as no starting, no passing, no fireworks, beware of electric shock, pay attention to falling objects, you must wear safety helmet, protective gloves and goggles.