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STREETLIGHTING MAIN ASPECTS OF PROJECTING, BUILDING AND OPERATION SPECIAL QUESTIONS. Dipl.-Ing. Wolfgang Prahl PRAHL LICHTTECHNIK GmbH PL Kätnerweg 13 b D-22393 Hamburg Tel: +49 40 640 32 76 Fax: +49 40 637 08 641 E-Mail: licht@wwwprahl.de http: //www.licht.wwwprahl.de.
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STREETLIGHTING MAIN ASPECTS OF PROJECTING, BUILDING AND OPERATION SPECIAL QUESTIONS Dipl.-Ing. Wolfgang Prahl PRAHL LICHTTECHNIK GmbH PL Kätnerweg 13 b D-22393 Hamburg Tel: +49 40 640 32 76 Fax: +49 40 637 08 641 E-Mail: licht@wwwprahl.de http: //www.licht.wwwprahl.de
Energy consumption for streetlighting Source: FGL
Energy consumption and costs for streetlighting Source: VDEW
Spectral luminous efficiency of insect eye Spectral luminous efficiency of human eye -----------------visible----------------- ---------------visible---------------- Human eye and insect eye 1
Tunnel lighting Source: FGL