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Dipl.-Ing. Wolfgang Prahl PRAHL LICHTTECHNIK GmbH PL Kätnerweg 13 b D-22393 Hamburg Tel: +49 40 640 32 76 Fax: +49 40

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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Dipl.-Ing. Wolfgang Prahl PRAHL LICHTTECHNIK GmbH PL Kätnerweg 13 b D-22393 Hamburg Tel: +49 40 640 32 76 Fax: +49 40

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  1. 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

  2. Energy consumption for streetlighting Source: FGL

  3. Energy consumption and costs for streetlighting Source: VDEW

  4. Lamps and Insects

  5. Spectral luminous efficiency of insect eye Spectral luminous efficiency of human eye -----------------visible----------------- ---------------visible---------------- Human eye and insect eye 1

  6. Human eye and insect eye 2

  7. Tunnel lighting Source: FGL

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