Flow-density relation

The flow-density relation describes how the flow of traffic changes based on the number of cars in a given area, such as a road or highway. When there are few cars, traffic flows smoothly. As more cars enter, the flow increases up to a point. However, if too many cars are present, congestion occurs, and flow decreases. Essentially, this relationship helps to understand how traffic density affects the movement of vehicles, crucial for traffic management and planning to minimize congestion and improve overall travel efficiency.