1. Development of streets lighting in Kaunas City A.Vaškys, R. Balsys, A. Mikulionis, V. Pakėnas, Kaunas University of Technology Department of Electrical and Lighting Engineering KTU

2. Brocken luminaires of stairs lighting KTU

4. It was more for trees lighting KTU

6. Number of traffic accidents in Kaunas during which people have suffered KTU

8. Electric energy saving: Installing efficient lamps, Usage of light dimming systems, Using efficient luminaires. KTU

9. Incandescent Lamp Light output 15-20 lm/W Service time about 1000 h KTU

10. Mercury Lamps Light output 20-60 lm/W Service time about 15 000 h KTU

11. Metal Halide Lamps Light output 60 -90 lm/W Service time about 10 000 h KTU

12. Sodium Lamps Light output 80 – 130 lm/W Service time about 24 000 h KTU

14. THE RESULTS OF FIRST STREET LIGHTING RENOVATION No. Description Units Results Before renovation After renovation 1. Number of luminaires p.c.s 16000 16000 2. Installed power of lamps kW 4880 1920 3. Electric energy consumption kWh 10 075 783 3 970 924 4. Electric energy saving kWh 6 104 859 60 KTU

19. Lighting regulation diagram KTU

20. Prospects of Kaunas City lighting KTU Lighting installations Number Installed power, kW Investment (LTL thousand) Light dimming and control 28932614 700 Parks and squares161701 800 Architectural units362013 700 Conflict zones200501 500 Yards and pedestrian ways ?????

23. THANK YOU A.Vaškys, R. Balsys, B.A. Mikulionis, V. Pakėnas, KTU Department of Electrical and Lighting Engineering KTU