Psychology & Psychiatry

The happiest mode of transportation? That would be cycling.

When it comes to a daily commute, what makes a person happier? That's the question a University of Minnesota researcher asked as she sought to better understand the connections between daily travel behavior and emotional ...

Health

Traffic fatalities on a high after cannabis legalisation

Monash University research examined the effect of recreational cannabis sales (RCS) on traffic fatalities in three US states where it was legalised—Colorado (legalised 2014), Washington (2014), and Oregon (2015), and nine ...

Health

Still too many highway deaths tied to speeding

(HealthDay)—Speeding is a factor in nearly one-third of U.S. traffic deaths, but doesn't get enough attention as a traffic safety issue, a new Governors Highway Safety Association (GHSA) report says.

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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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