The International Journal of Engineering and Science (IJES) || Volume || 7 || Issue || 8 Ver. II|| Pages || PP 01-07 || 2018 || ISSN (e): 2319 – 1813 ISSN (p): 23-19 – 1805 DOI:10.9790/1813-0708020107 www.theijes.com Page 1 Interactive System of LED-Studs for Road Signaling Using Adriano Platform and C++ Programming Language Dr. Diogo José Horst 1 , Dr. Charles Adriano Duvoisin 2 , André Pscheidt 3 , Adriano Mateus Pertusatti 4 1,2 Researcher, Department of Exact and Earth Sciences, Federal University of São Paulo, Brazil 3 PG Student, Department of Soil Science, Santa Catarina State University, Brazil 4 Bachelor, Department of Information Systems, Santa Catarina State University, Brazil Corresponding Author: Dr. Diogo José Horst --------------------------------------------------------ABSTRACT--------------------------------------------------------------- This study presents the elaboration of a Lighting Emission Diode (LED)-stud interactive system for road signaling. The prototype is based in Arduino platform programmed in C++ language. The electronic circuit is powered by solar energy, which receives and retransmits information pre-defined by the user to the other road studs via Global System of Mobile Communications (GSM) module. The road studs were designed and three- dimensionally printed (3DP) using yellow polylactic-acid (PLA) filament, however the proposed circuit can also internally integrate other conventional road studs. The solar panel connected to an internal battery for independent power storage was able to power the electronic circuit during 12 uninterrupted hours. The results show that, in addition to the luminous interactivity set by the user as desired, the prototype in question exceeds the brightness and reflectivity light levels of conventional road studs, thereby improving the driver's perception of the track, thus reducing the risk of causing accidents. KEYWORDS - Led-Stud, Luminous interactivity, Road safety, Signaling, Traffic control and management. --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 27-07-2018 Date of acceptance: 11-08-2018 --------------------------------------------------------------------------------------------------------------------------------------- I. INTRODUCTION There is an increase in the number of fatalities and accidents caused by difficult visibility, precarious signaling and adverse weather especially at night with conditions such as fog and rain, in tracks without proper soil demarcation over all extension of Brazilian road network, thereby causing a great deficit to the government. According to the World Health Organization (WHO), annually, road accidents kill 1.25 million people and injure up to 50 million people worldwide with almost 90% of traffic incidents occurring in low- and middle- income countries [1]. Road accidents result in medical costs, human losses, property damage, settlement costs (agreements and insurance) and much more [2-3]. Still according to the WHO, Brazil has the fourth largest number of deaths in the Americas, only standing behind the Dominican Republic, Belize and Venezuela. Brazil records about 47 thousand traffic deaths per year so 400,000 people are left with some kind of sequel. According to a survey made by the National Road Safety Observatory the cost to the country reaches 15 billion USD [4]. Researchers have suggested the use of Light Emitting Diode (LED) as an efficient and attractive alternative for road illumination with low energy consumption and good brightness [5-6]. LED technology creates a new opportunity to redesign road singling. Multi-source LED luminaries can be projected to make light distribution consistent with very specific road layouts [7-8]. The great benefits of LEDs in terms of light consumption and color management contribute to an increased development of LED-based applications [9-10]. The illumination using LEDs grows gradually due its economy and luminosity compared to incandescent lamps, not mentioning that the life of LEDs surpasses 30,000 hours of use and produces more than 30,000 lux [11]. In outdoor applications, a number of LED-based products have been proposed; mainly in the field of road lighting, these products can benefit drivers through traffic control devices [12-13]. The use of LEDs in road traffic projects adds value to various projects, from structural design and / or complements as security items, providing diverse utile applications, assisting the driver’s clear and objective perception of the track [14-15-16]. So traffic management and road safety can benefit from LED technology, but for its true effectiveness, the system should be luminous intensity efficient, providing visual comfort without strong brightness, regardless the environmental conditions [17-18-19]. LED-studs can improve vehicle orientation at night in terms of lateral control of vehicles in curves. For example, interactive lights on the roads can warn drivers about someone