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Track lighting is usually combined with directional lamps with reflectors, such as spotlights. [1] These lamps can run under either mains voltage or a lower (often 12 V) voltage. It is common to see line-voltage tracks with low-voltage fixtures. For these, each fixture requires a small built-in transformer to operate it.
Solar street lights are raised light sources which are powered by solar panels generally mounted on the lighting structure or integrated into the pole itself. The solar panels charge a rechargeable battery, which powers a fluorescent or LED lamp during the night.
Some street lights in New York City have an orange or red light on top of the luminaire (light fixture) or a red light attached to the lamppost. This indicates that near to this lighting pole or in the same intersection, there is a fire alarm pull box. [ 92 ]
Although the up-front costs of installing LED fixtures is significant, municipalities switching to LED street lighting generally expect to recoup their investment through reductions in ongoing electricity and maintenance costs. [18] Many of the early projects in the United States also benefitted from economic stimulus block grants. [18]
Street lights can be made intelligent by placing cameras or other sensors on them, which enables them to detect movement (e.g. Sensity's Light Sensory Network, GE's "Currents", Tvilight's CitySense). [5] [6] Additional technology enables the street lights to communicate with one another. Different companies have different variations to this ...
The first 12-team College Football Playoff bracket is set. Here's what to know, including a full schedule of bowl games and how to watch the action.
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