To transport hazardous materials that require placards, you must meet which requirement?

The requirement to transport hazardous materials that require placards includes three critical components: possessing a commercial driver's license (CDL), passing a written test specifically focused on hazardous materials, and obtaining the hazardous materials endorsement on that CDL.

Having a CDL ensures that the driver is certified to operate commercial vehicles, but it is not sufficient on its own for transporting hazardous materials. The written test confirms that the driver understands the specific regulations, safety practices, and emergency procedures associated with handling and transporting dangerous goods. Lastly, the hazardous materials endorsement is a legal requirement that allows drivers to carry these types of materials and indicates that they have met the necessary training and knowledge requirements.

Fulfilling all three components ensures compliance with regulations intended to protect public safety during the transport of hazardous materials, making this the correct selection.