How often should you check the tires on a placarded trailer with dual tires?

Regularly checking the tires on a placarded trailer, especially one equipped with dual tires, is critical for ensuring safe transportation of hazardous materials. The correct practice is to check the tires at the start of each trip and each time you stop. This is important because it allows you to monitor the condition and pressure of the tires consistently, ensuring that they are functioning properly throughout the journey.

Tire issues, such as under-inflation or wear, can significantly impact vehicle handling and increase the risk of an accident, particularly when hauling hazardous materials. Frequent inspections help to identify problems before they lead to tire failure, enhancing safety for the driver, other road users, and the environment.

Options suggesting less frequent checking, such as only at the start of each month or only when there is a problem, do not provide the same level of vigilance needed for safe operation. The approach of checking tires after every fifth trip also fails to prioritize the ongoing assessments required during transportation, especially given the importance of immediate responsiveness to tire conditions on the road.