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| Table 1: Comparison table of energy consumption for two types of road classification using traditional and new lamps sources | ||||||
| Tested: Siteco test road – Traunreut, Germany Nov 08 | ||||||
| Classification of road | Traditional lamp type used | Energy consumption per km in kWhr/per year | New lamp source | energy consumption per km in kWhr/per year | energy saving | energy saving with dimming (i) |
| ME4b | 70W HP sodium | 9.29 | 86x 1W LED(ii) | 7.84 | 16% | 27% |
| S4 | 50W HP | 7.39 | 86x 1W LED(ii) | 5.6 | 24% | 43% |
| (i) based upon varying levels of dimming and number of hours | ||||||
| (ii) with Siteco DL10 luminaire | ||||||
| source: Siteco lighting Nov 2008 | ||||||