The starting point when designing lighting installations that have a minimum of disturbing light pollution, is to ensure that only the minimum amount of light is provided that is needed to fulfill the function of the lighting installation. Dynamic control of the lighting installation enables the lighting to be adapted to different functional requirements according to the circumstances prevailing, such as variations in traffic density, weather and occupancy. This dynamic control should also include the ability to adapt the lighting to satisfy any curfew requirements. A further step, of course is, to design the lighting installation so as to produce the minimum of spill light. Here the physical shape of the lamp, and in certain situations also its spectral properties play an important role. The optical design of the luminaire determines its light distribution, and so is essential in obtaining the minimum amount of spill light. The choice of the reflectances of the surfaces of the area to be lighted and its surrounding areas may also have an influence on the actual amount of light pollution. All these aspects will be dealt with in this Chapter., together with guidance on determining the mounting height of luminaires and their aiming. The effect of employing LED lights embedded in the road surface for special conditions, is also described. Finally, the influence of any structures or trees surrounding lighting installations will be dealt with.


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    Title :

    Equipment and Design Aspects


    Contributors:

    Published in:

    Road Lighting ; Chapter : 18 ; 261-266


    Publication date :

    2014-11-22


    Size :

    6 pages




    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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