HAZMAT CDL Practice Test

How often must you check your dual tires when hauling hazardous materials?

1. Once every hour

2. Once every 2 hours or 100 miles

3. Once every 4 hours

4. Only when stopping for fuel

The correct answer is: Once every 2 hours or 100 miles

When hauling hazardous materials, it is essential to ensure that the vehicle's tires are in good condition to maintain safety on the road. Checking dual tires once every 2 hours or every 100 miles is a critical practice because it helps to identify potential tire issues that can compromise vehicle stability and increase the risk of accidents or spills of hazardous materials. This requirement stems from the need for a heightened level of vigilance when transporting dangerous goods, as tire failure can lead to severe consequences, including loss of control of the vehicle or even fires due to flammable materials. Adhering to this guideline ensures compliance with safety regulations and protects not only the driver and vehicle but also the public and the environment. Regular inspections help mitigate risks associated with tire blowouts or other tire-related issues that are particularly critical during the transport of hazardous cargo.