scope:

General

The recommendations in this Technical Report are structured with the intention of making them easily adaptable to the needs of individual countries. This document is a framework, which could serve for developing national codes of practice and standards.

Since Publication CIE 115-1995, Recommendations for the Lighting of Roads for Motor and Pedestrian Traffic, was issued, the performance of luminaires and lamps has improved and the realization of efficient adaptive lighting systems is technically possible at reasonable cost. This technical report considers these matters in detail and gives information about the use of control systems able to satisfy the requirements of adaptive lighting. The visibility level concept and Small Target Visibility (STV) algorithm are not considered here because they are under evaluation in CIE TC 4-36 "Visibility Design for Roadway Lighting".

The report is based on experience gained worldwide in the application of the luminance concept to the lighting of traffic routes. The document takes into account the needs of all road users.

In conformity with the most recent CIE practice, this report is based on maintained lighting levels (CIE 154:2003) and lighting quality. This implies that performance must not fall below the prescribed limits, which are minimum values, for the life of the installation.