Which method is commonly used for measuring pavement smoothness?

The use of an inertial profiler is widely recognized as a standard method for measuring pavement smoothness. This tool operates by utilizing a series of sensors and accelerometers to evaluate the surface profile of the pavement as it is driven over. The profiler captures variations in elevation, which are then processed to create a profile of the pavement surface. This data is crucial for assessing the quality of the road, as smoothness directly correlates with ride quality and vehicle performance.

Inertial profilers are favored for their accuracy and efficiency, as they can collect data over long distances without the need for extensive manual measurements. They provide detailed information that helps engineers and planners determine if the pavement meets the required smoothness specifications for safety and comfort.

In contrast, methods like mechanical rollers, concrete finishers, and pavement grinders serve different purposes within roadway construction and maintenance but are not specifically designed to measure pavement smoothness. Mechanical rollers are primarily for compaction, concrete finishers for leveling freshly poured concrete, and pavement grinders for surface correction or milling, rather than quantifying smoothness.