, seen here in Berkeley, California, is a freeway with many lanes and heavy traffic.]] has crosswalks, left-turn lanes, and traffic lights.]]Traffic is the movement of motorized vehicles, unmotorized vehicles and pedestrians on roads. Traffic laws are the laws which govern traffic and regulate vehicles, while rules of the road are both the laws and the informal rules that may have developed over time to facilitate the orderly and timely flow of traffic.Organized traffic generally has well-established priorities, lanes, right-of-way, and traffic control at intersections.
Organization
Traffic is formally organized in many jurisdictions, with marked lanes, junctions, intersections, interchange, traffic signals, or sign. Traffic is often classified by type: heavy motor vehicle (e.g. car, truck); other vehicle (e.g. moped, bicycle); and pedestrian. Different classes may share speed limits and easement, or may be segregated. Some jurisdictions may have very detailed and complex rules of t
Source:
http://en.wikipedia.org/wiki/Traffic