Automotive

Tesla driver killed in fiery crash hit 90 mph, report says

The Tesla driver who died with a passenger in a fiery September crash near Miami accelerated to 90 mph (145 kph) in the seconds before he lost control and smashed into trees, federal investigators said Wednesday—a conclusion ...

Energy & Green Tech

ESA acts to make air travel greener

Air passengers will soon be able to cut their carbon footprint when traveling on flights that are routed using satellites.

Automotive

NTSB chair wants Tesla to limit where Autopilot can operate

The head of the U.S. National Transportation Safety Board is calling on Tesla to act on recommendations to limit where its Autopilot driver-assist system can operate and to put a system in place to make sure drivers are paying ...

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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.

This text uses material from Wikipedia, licensed under CC BY-SA