trafflow
Trafflow is a term used in transportation engineering and urban planning to describe the movement of vehicles on road networks. It encompasses patterns of speed, density and flow that characterize how traffic distributes itself over space and time. The study of trafflow informs congestion analysis, infrastructure design, and the optimization of signal timing, ramp metering and traveler information systems.
Traffic flow theory distinguishes macroscopic models, which treat traffic as a continuous fluid, and microscopic models,
Data for trafflow analysis come from loop detectors, GPS traces, probe vehicles, and video or camera systems.