Vieira, Manuel AugustoVieira, ManuelaLouro, PaulaVieira, Pedro2020-11-042020-11-042018VIEIRA, Manuel Augusto; [et al] – Vehicular Visible Light Communication – I2V2V2I connected cars. In SENSORDEVICES 2018 – The Ninth International Conference on Sensor Device Technologies and Applications. Venice, Italy: IARIA, 2018. ISBN 978-1-61208-660-6. Pp. 175-180978-1-61208-660-62308-3514http://hdl.handle.net/10400.21/12336Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2017 do Instituto Politécnico de Lisboa. Código de referência IPL/2017/PPGDiode/ISELEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2017 do Instituto Politécnico de Lisboa. Código de referência IPL/2017/SMART_VeDa/ISELEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2017 do Instituto Politécnico de Lisboa. Código de referência IPL/2017/EmGraph/ISELThis paper investigates the connected vehicle concept at intersections with traffic signals control and proposes the use of Visible Light Communication (VLC) in Vehicular Communication Systems for vehicle safety applications. A smart vehicle lighting system that combines the functions of illumination, signaling, communications, and positioning is presented. A generic model of cooperative transmissions for vehicular communications services is established. Three specific vehicular communications systems are analyzed. One is for Infrastructure-to-Vehicle communications from the street lamps, located on roadside, to the vehicles; the other is for in line Vehicle-to-Vehicle communications and the last for Vehicle-to-Infrastructure communications from cars to the traffic lights, at the crossroad. An on-off code is used to transmit data. The encoded message contains the ID code of each emitter concomitantly with a traffic message that is received, decoded and resent to another vehicle or to traffic light, in the crossroad. An algorithm to decode the information is established. A phasing traffic flow is presented as a proof of concept.engI2V, V2I and V2V Vehicular communicationVisible Light CommunicationWhite LEDsSiC photodetectorsOOK modulationTraffic controlconference object