Vehicular density determines friction and viscosity, and therefore rate of traffic flow. Any vehicle can travel faster or slower than this rate based on legal, principle, and time concerns, but this modifies the overall viscosity of the system to maintain a conservation of traffic flow rate. How is ai path selection based on the streetwise skill with the end of avoiding traffic police and violent crime? How does navigation affect maximum speed and path selection? How, when, where, and why do police pull over vehicles? How does public transportation play into traffic simulation? Can AI path finding be factored with government objectives to chart the most efficient bus routes given a limited budget? Vehicles transport groups that form around the goal of arriving at a destination, including groups of one. Pedestrian and bike traffic is treated similarly, however they can travel over unpaved terrain and form their own crude temporary roads, called paths, which further facilitates traffic.