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Design and development of an improved traffic light control system using hybrid lighting system
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作者 Michael Osigbemeh Michael Onuu Olumuyiwa Asaolu 《Journal of Traffic and Transportation Engineering(English Edition)》 2017年第1期88-95,共8页
The deployment of light emitting diodes (LEDs) based traffic system control created the problem of dim displays when ambient light is similar to traffic lights. It causes some drivers' disability of seeing and obey... The deployment of light emitting diodes (LEDs) based traffic system control created the problem of dim displays when ambient light is similar to traffic lights. It causes some drivers' disability of seeing and obeying traffic signs. This makes drivers violate traffic rules. In this paper, an attempt to use hybrid lighting technology to mitigate this problem was developed. Incandescent lightings with deployed halogen bulbs provided an instan- taneous source of highly efficacious illumination which is brighter than the drivers' ambient lights (both daylight, electrical lights and their reflections), which can help drivers get access to enough warning and help them initiate traffic safety warning as necessary. The halogen lightings also offered the required high current draw needed in electrical circuitry to help brighten the LED displays. The problem of heat generated was eliminated by aerating the T-junction traffic light control unit designed for this technology. The result of hybrid lighting system design was found to be high luminosity and capability of gaining driver attention in real-time. It also allowed enhanced sign's image detection and pro- cessing for smart based technologies by providing the "light punch" needed for a wide range of visual concems. 展开更多
关键词 traffic lights Luminosity Halogen incandescence Light efficacy energy saving
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