CDL Hazardous Materials Practice Test

How frequently should checks on dual tires of a placarded vehicle be performed?

1. After every trip

2. Only when visibly damaged

3. At the beginning of each trip

4. Daily, regardless of use

The correct answer is: At the beginning of each trip

The requirement for checking dual tires on a placarded vehicle is crucial for safety and compliance. Performing the inspection at the beginning of each trip ensures that any issues, such as low air pressure, uneven wear, or other potential problems, can be identified and addressed before the vehicle is on the road. This proactive approach not only enhances safety for the driver and other road users but also helps in maintaining the vehicle's performance, which is particularly important for vehicles transporting hazardous materials. Daily inspections are important, but checking specifically at the trip's start aligns with the best practice of ensuring that the vehicle is prepared and safe for the specific journey ahead. This timeframe allows for frequent assessments of tire condition while also being practical and manageable for drivers.