Since the development of the VEDILIS - project (Vehicle Discharge Lighting System) interest came up in the automotive industry for changing not only the light source but for giving also more freedom to the light distribution itself. Changed light performance requirements given by the environmental and driving conditions should be answered by changed light patterns. This problem lead to the forming of a working group in the framework of the EUREKA project (European Research Committee) in the years 1992/1993. In first research and opinion polls the adverse weather situation was detected as the most critical function with the highest need for improvement. The ranking was followed by improved passing beams, bend lighting and motorway. However, times and rankings have been changing. Bend lighting (Curve Lighting) and Motorway lighting generated a very high ranking in today's public interest. Constantly rising is the interest for higher visual range in coordination with the need for glare prevention. The AFS regulatory Framework introduced a new functional description for a light distribution that should be applied to driving situations with higher speed and specific driving geometries. Usually the road construction on high speed lanes (like the 'Autobahn', 'Autoroute', 'Highway', 'Motorway' and other national names indicate) is different and shows often increased lateral distance of oncoming traffic. The AFS name was chosen to be 'Motorway Light'. The photometric requirements are different from other functions like Town Light or the basic passing beam function. Motorway Lighting is a function that is appreciated by every driver. In terms of importance, it can be stated that the more often the drivers are on the road, the more importance is given to lighting performance, visual range and safety. The braking distance analysis shows that motorway light can assist in decreasing the accidents due to stopping distances smaller than the detection distances.
Motorway light in adaptive lighting systems
Fahrbahnbeleuchtung in adaptiven Scheinwerfersystemen
2003
15 Seiten, 10 Bilder, 4 Tabellen, 13 Quellen
Conference paper
English
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