Which color of placard indicates a flammable material?

The color red is used on placards to indicate flammable materials in the Hazardous Materials Transportation System. This color is a universal sign of fire danger, making it easily recognizable to first responders and the general public. Flammable materials can easily ignite and pose serious hazards, so identifying them quickly is essential for safety during transportation and in emergency situations.

The specific use of red helps standardize the recognition of such hazards, allowing emergency responders to immediately assess the potential risks associated with a flammable material during incidents. This is crucial for formulating an effective response strategy to mitigate the danger posed by these substances.

In contrast, other colors like blue, white, and yellow are designated for different types of hazards. Blue often indicates health hazards, white is typically used for other forms of materials (including non-flammable substances), and yellow usually denotes reactive materials. Each color has a specific purpose and role in the placard system, underscoring the importance of correct identification for overall safety and response efficacy.