García Castellano, MaríaGonzález Romo, Juan ManuelGómez Galán, Juan AntonioGarcía Martín, Juan PabloTorralba, AntonioPérez Mira, Ventura2020-03-252020-03-252019-12García Castellano, M., González Romo, J.M., Gómez Galán, J. A., García Martín, J. P., Torralba, A., Pérez Mira, V. (2019). ITERL: A Wireless Adaptive System for Efficient Road Lighting. Sensors, 19(23), 5101. DOI: https://doi.org/10.3390/s192351011424-8220http://hdl.handle.net/10272/17640This work presents the development and construction of an adaptive street lighting system that improves safety at intersections, which is the result of applying low-power Internet of Things (IoT) techniques to intelligent transportation systems. A set of wireless sensor nodes using the Institute of Electrical and Electronics Engineers (IEEE) 802.15.4 standard with additional internet protocol (IP) connectivity measures both ambient conditions and vehicle transit. These measurements are sent to a coordinator node that collects and passes them to a local controller, which then makes decisions leading to the streetlight being turned on and its illumination level controlled. Streetlights are autonomous, powered by photovoltaic energy, and wirelessly connected, achieving a high degree of energy efficiency. Relevant data are also sent to the highway conservation center, allowing it to maintain up-to-date information for the system, enabling preventive maintenance.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/IoTITERLWireless sensorsLow-powerSmart lightingRoad lightingIntelligent transportation systemsTraffic intersectionsjournal article10.3390/s19235101open access