Which of the following is crucial for transportation of hazardous materials to be compliant with regulations?

Proper documentation and labeling are fundamental aspects of transporting hazardous materials in compliance with regulations. These requirements ensure that all parties involved—shippers, carriers, and receivers—are fully aware of the nature of the materials being transported, including their potential hazards. Accurate labeling provides critical information on how to handle the materials safely, what precautions are necessary, and how to respond in case of an emergency.

In addition, proper documentation, such as shipping papers and manifests, provides a clear record of what is being transported, which is essential for regulatory compliance and for verifying that the right protocols are followed throughout the transportation process. This helps to ensure the safety of the transport process and protects public health and the environment.

The other options do not align with the critical safety and regulatory framework required for hazardous materials transport. For instance, low-cost shipping options may sacrifice safety for price, while informal agreements lack the necessary formalities important for compliance. Minimal safety measures directly contradict the essential precautions needed when handling hazardous materials. Therefore, proper documentation and labeling stand out as key elements in ensuring regulatory compliance and safety in the transportation of hazardous materials.