Is the order of safety sign colors red-yellow-blue or yellow-red-blue?
2 Answers
Safety warning signs follow the color sequence of yellow, red, blue, and green. According to the guidelines for safety signs and their usage: When multiple signs are displayed together, they should be arranged in the order of warning, prohibition, instruction, and indication, from left to right and top to bottom. Each color on a safety sign has a specific meaning. Meaning of safety sign colors: National regulations specify four safety colors: red, blue, yellow, and green. Their meanings are: red indicates prohibition and stop (also represents fire prevention), blue indicates instructions or mandatory compliance, yellow indicates warnings and caution, and green indicates guidance, safe conditions, and passage.
I've been in safety management for over a decade, and there's actually a lot to consider when it comes to the order of safety signs. While national standards don't strictly specify whether it should be red-yellow-blue or yellow-red-blue, we generally follow logic on-site: prohibition signs (red) come first as they're most urgent, warning people against dangerous actions; warning signs (yellow) go in the middle to indicate potential risks; and mandatory signs (blue) come last to specify required actions. For example, in chemical plant pipeline areas, you often see the red-yellow-blue combination of 'No Open Flames - Beware of Leaks - Wear Protective Gear'. But in special scenarios like electrical maintenance, the order might be adjusted to yellow-red-blue, with the 'High Voltage Danger' yellow sign placed before the 'Do Not Close Switch' red sign. The key is that signs must be eye-catching and coherent, with spacing that doesn't exceed the visual range to be effective.
