Description

The purpose of this technical report is to summarise and review the literature concerned with the visual conspicuity of traffic signs in complex road environments and to make recommendations that will guide authorities in the design of traffic signs so that the signs will be noticed by drivers. 

The report covers the topics of what is meant by visual conspicuity, how it has been measured and the factors that influence it. Recommendations are made, based on current knowledge, on what the traffic engineer can do to increase the conspicuity of road traffic signs during the day and at night-time. 

This publication is written in English, with a short summary in French and German. It contains 40 pages. 

Description

The purpose of this guide is to supplement the lighting recommendations and standards for roads and areas of public use as detailed in the Publication CIE 115-1995. It replaces CIE 92-1992 Guide to the lighting of urban areas. 

The recommendations cover the effect of light on night time crime and suggests lighting requirements for residential roads and community areas, industrial roads, central business districts and malls, pedestrian paths and access facilities and cycle tracks. 

In addition to proposing levels of luminance and illuminance the recommendations consider aspects such as modelling of people and structures within the environment, the effects of glare and sparkle, suitability of light sources as far as colour appearance and colour rendering are concerned, the effect of the lighting on the environment and the general aesthetics of the lighting equipment used. 

This publication is written in English, with a short summary in French and German. It contains 38 pages with 5 figures and 11 tables.