Romanian Traffic Webcams-12K

Romanian Traffic Webcams-12K (RTW-12K) is a dataset of traffic-camera images captured from publicly accessible webcams across Romania, positioned slightly above street level or mounted on taller buildings. Data were collected via the Webcam Romania (2026) platform, which provides access to a wide range of urban and traffic webcams streamed in m3u8 format or via YouTube Live. We selected 12 locations and captured frames at fixed intervals (approximately every 15 seconds, depending on the camera), yielding roughly 20,000 images per location. These locations were chosen based on traffic density and camera elevation, with some sites specifically selected to increase representation for particular vehicle categories,such as border checkpoints for trucks or railway stations where busses frequently appear. The full collection was first processed using the YOLOv12x model to obtain preliminary annotations. Based on these predictions, we selected approximately 1,000 images per target class, acknowledging that each image may contain multiple classes to achieve a more balanced dataset. All selected images were then reviewed and manually corrected to ensure annotation accuracy.To further increase dataset diversity, particularly with respect to adverse weather, we repeated the acquisition process at an additional 12 locations (some overlapping with the initial set) during heavy rainfall. From this second round, approximately 200 images per class were manually selected.The final dataset contains 12,196 images