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How was this lighting plan created? Iris Podgorschek: The Vienna Department of Public Lighting - called MA33 - had the initiative in 2006 and contacted our office. They considered that there was a need to draw up guidelines for lighting roads and buildings for the next 10 to 15 years. Michael Podgorschek: But this lighting plan is not a fixed document. It will and must evolve. It will be adapted according to new products on the market, new technologies, and of course according to the city’s urban development.
What objectives were pursued? M.P.: We did a lot of work on the topography of the city: the districts, the roads, the buildings, the public parks; all of these structures have their own hierarchy in the daytime, which also needed to be transposed at night. It was necessary to define a clear structure of the city’s nocturnal landscape by determining the most appropriate type of lighting for each space. I.P.: In spaces dedicated to pedestrians, warm white light is necessary because facial recognition is essential there. On the other hand, the vehicle traffic routes can very well be lit in yellow high-pressure sodium light. For monuments and buildings, white light is a logical choice but the levels must not be the same, whether for a prestige building or a more ordinary site.
How did you identify the criteria needed for quality lighting and organise them into a hierarchy? M.P.: Lighting plays several roles. And certain criteria are vital. Safety for example, is an essential parameter. Vienna has a tradition of quality lighting meeting high standards throughout the city, both in the centre and the more remote districts. I think that lighting is a key element in the fact that Vienna is one of the safest western metropolises, with a level of crime that is markedly lower than in comparable cities in Europe. Lighting at night is not a luxury. It has to reassure all users of the city, including the elderly, children and people with reduced mobility.
How do you feel about lighting in the city? I.P.: Lighting is a significant factor in giving a city or a district its identity. The lighting that lights up a building or a road gives the pedestrian information and reference points. A small local church will not be lit up in the same way as a cathedral or opera house in the heart of the city. Lighting makes it possible to organise monuments into a hierarchy so as to make them more comprehensible for people. It really makes it possible to understand and “read” the city at night. M.P.: Lighting is also involved in orientation. A person out for a walk in Vienna at night will pick up the signals given to them by the city’s differentiated lighting to get their bearings and find their way around. Public lighting and illuminations are a little bit like the stars; they help you to find your way at night and to decide on the direction you want to take! |