Unlocking the Potential of Smart Cities: Our paper details a groundbreaking field test validating the direct camera-to-RSU connection in a C-V2X pedestrian warning scenario. By leveraging local AI computing within the Sony IMX500 smart camera, our approach eliminates the need for traditional computing servers, leading to significant improvements in pedestrian warning speed. Test results demonstrate a reduction in response time by up to approximately 1 second, showcasing the efficiency gains and transformative benefits of building smarter cities.