What should a driver always have on hand when transporting hazardous materials?

Answer: B — Emergency response guides specific to the materials being transported

When transporting hazardous materials, a driver is required to have emergency response guides specific to the materials being transported. These guides provide crucial information on how to handle emergencies, including spills, leaks, or fire situations involving the specific hazardous materials being carried. They outline proper procedures for containment, evacuation, and communication with emergency responders, ensuring that the driver is prepared to react appropriately in case of an incident. Having access to these guides can greatly reduce risks associated with transporting hazardous materials and helps ensure the safety of the driver, the environment, and the public. The requirement for these guides is mandated by regulations governing the transportation of hazardous materials, which emphasize the importance of preparedness and knowledge in hazardous situations.