Vehicle Counting Agent

A small agent that perceives a traffic scene, remembers each tracked vehicle, decides whether a genuine line crossing happened, and acts by updating the count and the video overlay.

Count reliably — detection alone has no memory between frames, so a car on screen for three seconds produces 75 unrelated detections.

• YOLO11 detects vehicles in one forward pass; only car, motorcycle, bus and truck classes are kept.
• BoT-SORT tracking gives every vehicle a stable ID, which is what makes counting once possible.
• A dead band either side of the line stops jittery boxes on the line from flipping sides and double-counting.
• A track must survive a minimum number of frames before it can count, filtering out flicker.

On the included 48-second, 1280×720 CCTV clip it counts 32 cars, 3 buses and 1 motorcycle — 36 in total. The single truck in frame is already past the line and moving away, so a count of zero trucks is correct.

Command-line tool with configurable model, line position, confidence, dead band and tracker; runs on video files or a webcam.

• Python
• YOLO11
• Ultralytics
• BoT-SORT