Opus RSE is a global leader in Remote Sensing of traffic emissions. We are focused on monitoring and controlling real-world traffic emissions. Opus RSE is worldwide the only ISO-17025 accredited laboratory for the remote measurement of real-world traffic emissions. Opus Remote sensing technology is a novel solution that makes it possible to remotely measure the emissions of each vehicle in its normal circulation in city roads and streets. Our technology and our services have multiple applications. From analyzing the real-driving emissions emitted by the traffic circulating in a city, to the identification of the highest polluting or manipulated vehicles in their free circulation, to integrating this unique technology in intelligent, hyper-connected and sustainable cities.