javierruanohdez/opencv-vehicle-detection ? reverse-engineered prompt

Build me a Python app that can watch a traffic video and detect moving vehicles in real time, then count them as they pass through different lanes. I want each vehicle to get a unique ID so it can be tracked across frames, and I want clear colored boxes and overlays on the video so it is easy to see what is happening. The app should also flag unusual vehicles or movements with a different color, like red, and show lane counts separately for each area. Use the sample traffic video in the project to make sure it runs smoothly, and keep it simple enough to open and run from a notebook or script. If you need to check current OpenCV docs or best practices online, go ahead and do that.