What device is used to measure pavement friction properties?

The device commonly used to measure pavement friction properties is the decelerometer. This instrument evaluates the friction between a surface and a tire by measuring the deceleration of a vehicle as it moves over the pavement. The decelerometer is designed to provide quantitative data regarding how well a pavement surface can provide traction, which is crucial for maintaining safety on roadways and runway surfaces.

Measuring pavement friction is vital, particularly for airport runways and paved roads, as insufficient friction can lead to skidding and accidents during adverse weather conditions. The decelerometer allows for the collection of data that informs maintenance practices and safety assessments.

While other devices in the choices also measure friction properties, they each serve different purposes or have specific methodologies that may not align with the standard practice of measuring pavement friction as effectively as the decelerometer does.