What document must a driver carry when hauling hazardous materials?

Answer: B — hazardous materials endorsement and a shipping paper

When hauling hazardous materials, a driver is required to carry both a hazardous materials endorsement and a shipping paper. The hazardous materials endorsement on the driver's CDL signifies that they have received specialized training and are certified to transport dangerous goods. This endorsement helps ensure that the driver understands the regulations and precautions necessary when handling hazardous materials. The shipping paper, on the other hand, contains critical information about the hazardous material being transported, such as its identification number, the proper shipping name, and details about any associated hazards. This documentation is vital for emergency responders and other authorities in case of an accident or spill, allowing for a safe and informed response. Other documents, such as a vehicle registration certificate or an insurance policy document, do not specifically address the requirements for transporting hazardous materials and therefore do not fulfill the legal and safety obligations of a driver engaged in this activity. Similarly, carrying just a driver's license does not meet the specific requirements for handling hazardous materials and lacks essential information regarding the materials being transported.