What placard color is designated for Class 3 hazardous materials?

Class 3 hazardous materials are flammable liquids, and the appropriate color for their placard is red. This bright red color serves as an immediate visual warning to first responders and those in the vicinity of the danger posed by flammable materials, which can ignite easily and cause significant hazards if not handled properly. The red placard stands out and draws attention, which is crucial in emergency situations where quick identification of hazards is necessary for safety and effective response.

The other colors associated with different classes of hazardous materials help distinguish between various types of risks, but red is specifically reserved for flammable liquids, making it a critical part of identifying and managing these types of materials effectively.