Does rush hour traffic really produce more pollution than midday traffic? Slow speeds and stop-and-go driving burn fuel less efficiently. This project creates a pollution index from real traffic data. You set up a video camera overlooking a 200-meter stretch of highway. You record from 6 a.m. to midnight and split the footage into six 3-hour windows. For each window, you estimate average speed. You also count vehicles and note the flow pattern. You then score each factor and add them up to compare pollution levels across the day.