Street lighting and light pollution
The main objective of outdoor lighting is to ensure safe and comfortable visibility during dark times on streets, roads, in parks and other areas that need lighting. Outdoor lighting has a significant impact on ensuring road safety, reducing crime opportunities and making towns and urban communities more attractive for the visitors. Upon switching off or poor functioning of outdoor lighting, there have been observed the increase in the frequency of traffic accidents and also the increase in the numbers of burglaries, street rage and car thefts. As we are located in the geographical area where we have approximately 3,700 hours of dark time then we spend a relatively large amount of electric power on outdoor lighting. Expenses of electric power on outdoor lighting may reach up to 45% of the electric power consumption of the public sector. Many outdoor lighting systems that were constructed several decades ago need modernisation as these are characterised by technical lag and low energy consumption effectiveness. We still use outdoor lighting equipment that have lost their reflectance properties, and heavy-duty lamps with low lighting performance. Unfortunately, the outdoor lighting systems might not be established expediently so that the radiation of light to unnecessary and undesirable directions would be avoided, including as interfering light that radiates to buildings or plots and as light pollution that is directed upwards. We provide consultations for the establishment of optimal and energy saving outdoor lighting and for the assessment of energy savings of the existing outdoor lighting.