CDL Hazardous Materials Practice Test

What must you do when hauling hazardous materials with dual tires?

1. Check the tires each time you stop

2. Inspect the tires weekly

3. Replace tires every month

4. Soak tires in water

The correct answer is: Check the tires each time you stop

When hauling hazardous materials, it is essential to check the tires each time you stop. This is critical for ensuring safety, as any issues with the tires, such as low air pressure or damage, can significantly affect the handling and stability of the vehicle. Dual tires, in particular, have specific requirements since they are designed to support heavy loads and help maintain balance. Regular checks during stops allow for quick identification and addressing of any potential tire problems before they escalate, which is especially crucial when transporting hazardous materials that could pose additional risks if handled improperly. For tire inspections, while weekly checks can be beneficial in a general context, the immediate checks at each stop are vital when operating under the stringent safety standards required in hazardous material transportation. Regular tire replacement is not typically necessary on a monthly basis, and soaking tires in water does not contribute to their safety or integrity. The focus remains on immediate, on-site evaluations to ensure that the vehicle remains safe for operation at all times.