What condition may require the use of a pilot car when transporting an oversize load?

Using a pilot car is often mandated as part of the requirements stipulated in an oversize transport permit. If a load exceeds specific dimensions—such as width, height, or length—regulatory authorities may require the presence of a pilot car to ensure safe navigation through traffic and proper communication with other road users. The pilot car assists in alerting other drivers about the oversized load ahead, providing a buffer, and helping navigate areas with tight turns or narrow roadways. This requirement enhances safety for both the transport vehicle and other road users, ensuring compliance with the conditions set in the oversize permit.

In contrast, while height exceeding a certain limit generally might require additional measures, it is not the sole determining factor for using a pilot car without the context of existing permit regulations. Traveling on rural roads or during inclement weather may increase risk levels, but they do not inherently necessitate the use of a pilot car unless specified in the permit conditions. Therefore, the presence of permit conditions is the key reason for requiring a pilot car when transporting oversize loads.