Prediktion av vägyteluminans i vägbelysning
2008 (Swedish)Report (Other academic)Alternative title
Prediction of road surface luminance in road lighting (English)
In night-time driving, road lighting is important to road safety. Consequently, it is important that the performance of the lighting is satisfactory, not only immediately after installation, but also over time. Therefore, the performance, which in most cases is described by the road surface luminance, should be checked regularly, using condition assessment. Condition assessment of road lighting is preferably carried out using mobile measurement equipment. However, luminance is difficult, or even impossible, to measure at speed. The luminance of a road surface is partly dependent on the illuminance and partly on the reflection properties of the surface. The first parameter should be possible to measure at speed, while the latter might be characterized by the daylight luminance coefficient, which can be measured using a hand-held instrument. This report describes an attempt to predict the luminance of a road surface in road lighting from mobile measurement of illuminance and hand-held measurement of the luminance coefficient in few measurement points on the surface. The luminance can then be estimated as the product of these two parameters.
Place, publisher, year, edition, pages
Linköping: VTI., VTI rapport 620 , 2008. , 19 p.
VTI rapport, ISSN 0347-6030
Lighting, Road surface luminance, Measurement, Method, Prediction, Mathematical model, Illumination, Reflection
Research subject Road: Highway design, Road: Safety devices
IdentifiersURN: urn:nbn:se:vti:diva-6478OAI: oai:DiVA.org:vti-6478DiVA: diva2:675357