What is one responsibility of hazmat carriers?

A fundamental responsibility of hazmat carriers is to comply with hazardous materials regulations. This compliance is crucial because it ensures the safe transportation of hazardous materials, which can pose significant risks to public safety and the environment if not handled properly. Regulations set forth by agencies such as the U.S. Department of Transportation (DOT) outline requirements for packaging, labeling, documentation, and handling of hazardous materials. Adhering to these regulations helps prevent accidents, spills, and exposure to harmful substances, thereby protecting the health and safety of drivers, emergency responders, and the general public.

The other options do not address the essential legal and safety requirements of transporting hazardous materials, which is why they are not suitable responsibilities for hazmat carriers. For instance, while filling packages to capacity might seem practical, it doesn't necessarily comply with safety or regulatory standards. Transporting materials at any speed overlooks the importance of safe driving practices. Similarly, switching vehicles as needed does not pertain to the direct responsibilities tied to the safe and compliant handling of hazardous materials.