Street lighting
Light guides
Public spaces are organized to a large extent by light. Streets, squares, cycle paths, parking lots, parks, bridges, tunnels and port facilities all have to be lit so that traffic can run smoothly right around the clock with the necessary high levels of safety. High levels of clarity are required in cities where traffic users compete for limited road space. The main criteria for illuminating the city spaces are uniformity, high luminance and adequate anti-glare measures. In addition, night-time floodlighting of prestige buildings and installations brings a city to life.
Main thoroughfares
Bright economical VIALOX NAV-T 4Y and NAV-E SUPER 4Y lamps are ideal for main traffic routes. VIALOX NAV lamps can be operated on appropriate control gear with integrated ignition units without the need for additional igniters. Prestige lighting in city centers is provided by POWERBALL HCI-E lamps from OSRAM with their brilliant white light. VIALOX NAV-E Plug-in lamps are ideal direct replacements for HQL 125 W, 250 W and 400 W mercury vapor lamps. They can simply be installed in existing HQL luminaires from OSRAM provided the control gear is suitable for the higher operating current.
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Residential areas
Residential streets need particularly uniform lighting that extends into the areas adjacent to the road itself to protect the more vulnerable road users. As road surfaces often change in residential areas an average illuminance should be provided. OSRAM high-pressure sodium lamps and metal halide lamps easily meet these requirements. While the very bright and economical VIALOX NAV-E (Standard), VIALOX NAV-E SUPER 4Y, NAV-E/I 4Y and NAV-E Plug-in lamps provide optimum illumination, POWERBALL HCI-TT 70 W, 100 W and 150/830 lamps from OSRAM provide a white light color to add a little flair.
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Cycle paths
The bicycle is an extremely popular mode of transport particularly in cities with high traffic volumes because it combines an element of exercise with eco credentials. But when cycle paths leave the main roads and pass through parks for example they need their own lighting. The important thing here is to provide uniform illumination because even the shortest dark zones have a considerable adverse effect on concentration and perception. Economical plug-in solutions with VIALOX NAV-E Plug-in lamps provide the necessary illuminance to see obstacles in good time. The HQL 4Y lamp with its extended maintenance cycle offers a cost-effective plug & play solution. For high-quality lighting systems the POWERBALL HCI-TT lamp from OSRAM provides excellent luminous flux and color rendering.
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Pedestrian crossings
Pedestrian crossings are particularly sensitive areas because pedestrians, the most vulnerable road users, have priority over vehicles. When pedestrians are close to the crossing, drivers can best see them as bright objects against a dark background. It is therefore best to have a high vertical illuminance here with its maximum value at the center of the crossing without blinding the drivers. POWERBALL HCI-E metal halide lamps installed in luminaires with an enhanced type of protection are ideal for this task. Their special light color contrasts strongly with the other street lighting. VIALOX NAV-E Plug-in lamps are gaining in popularity as modern economical alternatives.
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Parking lots
Large parking lots often have narrow parking bays, are poorly lit and a little sinister. The best results for parking lots are achieved with energy-efficient lighting systems rated at 400 W and higher mounted on ten meter high masts. Long-life VIALOX NAV-T SUPER 4Y lamps are ideal light sources here. Thanks to their optimum distribution of light and enormous luminous efficacy the mast spacing can be generous. POWERSTAR HQI-T (150 W) lamps or compact POWERSTAR HQI-E (400 W) lamps from OSRAM in various wattages are a modern and economical solution.
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Lighting for city squares
Squares are often the center of city life. Lighting for city squares is therefore not just about the safety of pedestrians but also about making the city look attractive and inviting. Lighting designers can work with a variety of different types of light to create just the right impression. For example, VIALOX NAV-TS SUPER 4Y, HQL DE LUXE, HQL SUPER DE LUXE, POWERBALL HCI-TT and POWERSTAR HQI-E (1,000 W) lamps from OSRAM can be used together.
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Parks and gardens
Parks are oases of peace in the hubbub of the city, where nature provides welcome relief from all the concrete. Mast-mounted fixtures are mainly used for lighting these areas. They mostly provide rotationally symmetrical light down on pedestrians and cyclists. VIALOX NAV-E 4Y lamps are the ideal light sources here. Alternatively modern parks can be well lit with indirect reflector systems which are best equipped with POWERBALL HCI-T, -TM or -T (250 W) lamps. Bollard luminaires can be used to highlight steps or mark out paths. POWERBALL HCI E/P lamps from OSRAM are the perfect choice here.
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Pedestrian precincts
Pedestrian precincts are the heart of a city. This is where the shops, cinemas and cafes are located. Good lighting with plenty of warm light creates the right mood and encourages people to stroll along or stop and watch the world go by. Safety aspects should not be forgotten however. POWERBALL HCI-TM lamps installed in reflector systems are suitable for spotlighting objects of interest. To illuminate colored facades in a neutral light, fixtures equipped with VIALOX NAV-T (Standard) or VIALOX NAV-TS lamps can be easily upgraded to POWERBALL HCI-TT lamps from OSRAM.
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Bridges
Bridges do more than just carry traffic. With the right artificial light, bridges can be displayed as outstanding man-made structures. Lighting designers can choose from many different OSRAM products to achieve the right effect. Intricate details are best emphasized by the focused light of POWERBALL HCI-TT or HCI-T or POWERSTAR HQI-T lamps. Flat areas and structural elements are best lit with VIALOX NAV-T 4Y or POWERSTAR HQI-TS lamps from OSRAM.
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Tunnels
Tunnels take the pressure off the roads in the immediate vicinity. A good lighting system guarantees a high level of road safety and also makes emergency telephones, escape routes and shelters easier to find in the event of an accident. Tunnel entrances and exits have to be lit more brightly during the day so that drivers quickly get accustomed to the different lighting conditions in the tunnel. In view of the long operating times, extremely long-life energy-efficient lamps and systems are ideal. VIALOX NAV-T 4Y or SUPER 4Y lamps in luminaires with a high type of protection are suitable here.
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Further information
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