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Want to escape Sao Paulo's traffic? Take a flying taxi

While Uber has changed ground transport in many cities, Sao Paulo's infernal traffic jams have sparked a new app that opens the sky to commuters: Voom, a helicopter taxi service that charges according to distance and the ...

A commuter's dream: Entrepreneurs race to develop flying car

Even before George Jetson entranced kids with his cartoon flying car, people dreamed of soaring above traffic congestion. Inventors and entrepreneurs have long tried and failed to make the dream a reality, but that may be ...

Study shows autonomous vehicles can help improve traffic flow

Improvements in traffic flow and fuel consumption are boosted when even a few autonomous vehicles are immersed in bulk traffic, according to research by a Rutgers University-Camden scholar, Benedetto Piccoli, and a team of ...

Government to require cars be able to talk to each other

All new cars and light trucks would be able to talk wirelessly with each other, with traffic lights and with other roadway infrastructure under a rule the Transportation Department proposed Tuesday. Officials say the technology ...

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Traffic

Traffic on roads may consist of pedestrians, ridden or herded animals, vehicles, streetcars and other conveyances, either singly or together, while using the public way for purposes of travel. 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.

Traffic is formally organized in many jurisdictions, with marked lanes, junctions, intersections, interchanges, traffic signals, or signs. 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 the road while others rely more on drivers' common sense and willingness to cooperate.

Organization typically produces a better combination of travel safety and efficiency. Events which disrupt the flow and may cause traffic to degenerate into a disorganized mess include: road construction, collisions and debris in the roadway. On particularly busy freeways, a minor disruption may persist in a phenomenon known as traffic waves. A complete breakdown of organization may result in traffic jams and gridlock. Simulations of organized traffic frequently involve queuing theory, stochastic processes and equations of mathematical physics applied to traffic flow.

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