Why fire extingusiher use red color

In the past, people thought that red was eye-catching, fire prevention was the first priority, so fire engines, fire hydrants and fire extinguishers were decorated with red. Later, the science found that yellow was eye-catching, so some countries changed to yellow fire engines. In China, red is striking and deeply rooted, which makes people think of fire. So it's always red. Of course, fire extinguishers are green and water-based. Green symbolizes environmental protection. The following is from Du Niang. Fire engines in most countries are red. Because it is the most eye-catching, it can be seen from far away places. However, according to a survey conducted by the transportation department of New York, every 100,000 red fire engines appear, causing 32 accidents. If the fire engines are painted more vivid yellow, only 14.5 accidents will occur for every 100,000 trips dispatched, which has dropped by more than half. Because the light color will make the outline of the car look bigger and feel closer to yourself, which is beneficial to traffic safety. Therefore, they advocate that the fire engines should be painted yellow. However, the fire department resolutely opposes this, because yellow makes people emotionally stable and will reduce the efficiency of fire fighting, while red can stimulate morale and make people excited