Where did the warning signs come from? How to read quickly?

The purpose of warning signs is to maintain social order and ensure people's safety. At first, I hope everyone will pay attention to some things, such as landslides, toxic substances and so on. When they go, they tell each other in written or spoken language. Later, they set up a unified warning sign for unified management and easy identification. There are signs on the beat, and different signs represent different events that need attention.

Generally speaking, these safety warning signs are for our safety and social order. If there are no signs such as prohibition and direction, we will easily have traffic accidents on the road. However, it is more dangerous in the workplace. If there is no warning sign, it will not attract people's attention and accidents will occur frequently. Some chemicals are volatile and can cause death when the concentration is relatively high. If there is no danger warning in the confined space, poisoning and suffocation are likely to occur. Ok, there are some safety warning signs under the high-voltage lines and above the telephone poles. Without these safety warning signs, electric shock is likely to occur. In fact, as long as we observe carefully, we can also see that there are many warning signs in life, and some people may not understand what those warning signs mean.

China also expressly stipulates that business units should set up safety and eye-catching warning signs on equipment and facilities installed in production and business premises with large risk factors. Therefore, these safety warning signs are actually very close to our lives. They have icons and words on them, which are not particularly difficult to understand. Just like our common signs in the picture below, there are striking words to remind people that those who can't read the words can also look at the icons above to understand, for example, beware of the cable icons. There are people with cables on the ground, accompanied by lightning signs, reminding people to be careful with cables. In fact, safety warning icons are not difficult to understand, and there is no need to study and memorize them. These things are closely related to our lives, and in our usual education, we are also told to be careful with electricity and water.