What does 49 CFR Section 172.500b identifie?

49 CFR Section 172.500(b) identifies the requirements for the marking of hazardous materials in transportation. It specifies the need for proper labeling and marking to ensure safe handling and compliance with regulations. This section outlines the criteria for the size, shape, and content of the markings, which are crucial for informing emergency responders and personnel about the nature of the hazardous materials being transported.