What types of pavements are required to be sampled and tested?

Sampling and testing of road pavements are critical to ensure they meet the necessary performance standards and quality requirements. The correct answer emphasizes the need to sample and test all full-width travel lane pavements along with specific conditions that may dictate additional testing.

This approach ensures a comprehensive assessment of the pavement's structural integrity, durability, and overall suitability for vehicular traffic. Full-width travel lanes are crucial as they accommodate all vehicular movements; therefore, assessing them helps identify potential issues that might arise over time, ensuring safety and longevity.

In contrast, focusing solely on mainline travel lane pavements could lead to overlooking potential problems in auxiliary lanes or other critical areas. Likewise, narrowing the scope to pavements wider than a specific measurement or only temporary pavements would not provide a complete picture of the overall roadway condition. The requirement to include all full-width travel lanes reflects a commitment to thorough quality control in pavement construction and maintenance.