Automotive

Researchers find way to make traffic models more efficient

Models that predict traffic volume for specific times and places are used to inform everything from traffic-light patterns to the app on your phone that tells you how to get from Point A to Point B. Researchers from North ...

Automotive

Federal agency sends team to probe Tesla crash that killed 3

The U.S. government's road safety agency has dispatched a team to investigate the possibility that a Tesla involved in a California crash that killed three people was operating on a partially automated driving system.

Computer Sciences

Simulating realistic lane changes in two-lane traffic

Many urban areas worldwide are now rapidly expanding, often with major negative impacts on traffic congestion. To address this issue, researchers have constructed models aiming to simulate the flow of traffic—but so far, ...

Engineering

Expert: Roads need to be 'smart.' Here's why.

Constant construction on your vacation route, jarring potholes during the winter and bridge collapses will continue until roads are "smart enough" to better prevent their own damage, says a Purdue University civil engineer.

Automotive

China grants first driverless taxi permits to Baidu, Pony.ai

China has granted Chinese internet services company Baidu and a rival autonomous car company, Pony.ai, permits to provide driverless ride-hailing services to the public in Beijing, a significant regulatory step in the country's ...

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