Instruments used to measure the reflectivity of road markings and signs. Good reflectivity ensures visibility for drivers, especially at night or in adverse weather conditions, contributing to road safety.

Tools used for rapid, on-site measurement of asphalt density. Proper asphalt density is vital for pavement strength, durability, and resistance to deformation, directly impacting the longevity of road surfaces.

A non-destructive testing device used to estimate the surface hardness of concrete, which is correlated with its compressive strength. It works by measuring the rebound height of a spring-loaded hammer striking the concrete surface.