Final answer:
A driver transporting a placarded amount of hazardous materials needs a hazmat endorsement is true. This requirement is based on the United States Department of Transportation regulations and ensures safe transportation of hazardous materials.
Step-by-step explanation:
The statement that a driver transporting a placarded amount of hazardous materials needs a hazmat endorsement is true. According to the United States Department of Transportation hazardous materials regulations, drivers must have a hazmat endorsement on their commercial driver's license (CDL) to transport hazardous materials that require a placard.
Obtaining this endorsement involves additional training and testing to ensure the driver's ability to handle and transport these materials safely. This is crucial for public safety and the protection of the environment, aligning with both USDOT and EPA regulations.