Current practice shows that measurements verifying the quality of road lighting in the place of its installation are performed sporadically. A precise inspection of the road lighting infrastructure, i.e. verification of compliance with the assumptions of the project, checking whether changes have been made at the implementation stage that affect the performance of luminaires, checking the technical condition of the lamps and verification of their photometric parameters are important not only from the safety point of view, but also allow to optimise lighting costs, which nowadays is one of the biggest challenges for road managers. Proper illumination of the road is influenced not only by the quality of the lamps themselves, but also by the type of road surface, its humidity and the colour of the facade of the adjacent buildings. Luminance measurement of a road section or a pedestrian crossing zone avoids underexposure or excessive illumination of roads, which directly improves safety and has an impact on costs.
