The CIE Division 4 “Lighting and Signalling for Transport” in collaboration with INRIM (Istituto Nazionale di Ricerca Metrologica) and CERTU (Centre d'études sur les réseaux, les transports, l'urbanisme et les constructions publiques) organizes an

International symposium on road surface photometric characteristics: measurements systems and results

The symposium will be a great opportunity to discuss the importance of road surface photometric characteristics in nowadays lighting engineering and to evaluate the state of the art and future trends of instrumentation for its characterisation.

Everyone interested on road surface characteristics  or characterization should attend the meeting: lighting engineers and designers, researchers on materials characterisation, road and lighting plant managers, road authorities, …

The need to increase the photometric performances of road lighting systems considering environmental and energetic aspects has become a matter of primary importance in many countries: road lighting represents a large amount of the electricity consumption of a country.

Moreover, the importance of considering correct photometric data, of luminaires as well as of road surfaces, has also become an international focus.

To save energy while visual performances increase requires a detailed physical modelling of the lighted environment and of the human vision properties: in this process the photometric characteristics of the road surface play a key role.

THE GOALS

The workshop main goals are:

·  to provide a detailed and update description of the existing measurement systems and their acquisition methodologies

·  to face the new research on measurement methodologies and systems

·  to discuss about relevant measurement problems

·  to give to researchers and lighting engineers the possibility to compare different technical solutions both for in situ and in laboratory characterisations

·  to gather the recent data of current materials and evaluate their impact on the road lighting performances

·  to help lighting designers on the evaluation of road surface characteristics and on their importance in the plant design

The outcome of the workshop could be utilized for future works in Division 4, especially, for CIE reportships R4-30 “Measuring systems for in-situ road characteristics” and R4-32 “Reflection properties of road surfaces”