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P2P traffic control
January 07, 2009Wireless technology could reduce congestion, accidents
Could a concept from information technology familiar to online file sharers be exploited to reduce road congestion and even traffic accidents? That is the question answered in the affirmative by researchers in California, writing in the International Journal of Vehicle Information and Communication Systems.
Trevor Harmon, James Marca, Pete Martini, and Raymond Klefstad of the University of California, Irvine, explain that one of the key failings of modern transport systems is the inept collection and distribution of usable traffic information. According to one US survey, they point out that less than a third of signaled intersections on arterial roads had any form of electronic surveillance. In other words, around 70% of all traffic lights have no electronic monitoring and this does not take into account the regions between traffic signals.
"The unfortunate consequence is," they say, "that, even if every highway were fully and accurately monitored, drivers attempting to plot an alternative route around an incident would have virtually no information about conditions on the arterial street network."
They explain that there is research currently underway to address this issue using local-area wireless technology. This technology will allow vehicles to form an ad hoc network that can exchange timely information about traffic conditions, incidents, and accidents. The research team has a vision for such a traveler-centric, zero-infrastructure system they have named Autonet. This network would share information through a peer-to-peer (P2P) system akin to those used by file sharers on the internet but exchanging useful traffic information rather than music and video files.
The team has already carried out a validation of the Autonet system. In the prototype based on readily available 802.11b wireless technology, they explain, an in-vehicle computer "client" with an informative graphical user interface (GUI) continuously monitors other nearby clients on the wireless network, exchanging knowledge about local road conditions.
The system can handle measurements for approximately 3,500 traffic incidents for two vehicles passing each other at highway speeds, the team asserts. They point out that not all the wireless clients in the network need be vehicles, roadside monitoring posts could be embedded in the network too.
Inderscience Publishers
"The unfortunate consequence is," they say, "that, even if every highway were fully and accurately monitored, drivers attempting to plot an alternative route around an incident would have virtually no information about conditions on the arterial street network."
They explain that there is research currently underway to address this issue using local-area wireless technology. This technology will allow vehicles to form an ad hoc network that can exchange timely information about traffic conditions, incidents, and accidents. The research team has a vision for such a traveler-centric, zero-infrastructure system they have named Autonet. This network would share information through a peer-to-peer (P2P) system akin to those used by file sharers on the internet but exchanging useful traffic information rather than music and video files.
The team has already carried out a validation of the Autonet system. In the prototype based on readily available 802.11b wireless technology, they explain, an in-vehicle computer "client" with an informative graphical user interface (GUI) continuously monitors other nearby clients on the wireless network, exchanging knowledge about local road conditions.
The system can handle measurements for approximately 3,500 traffic incidents for two vehicles passing each other at highway speeds, the team asserts. They point out that not all the wireless clients in the network need be vehicles, roadside monitoring posts could be embedded in the network too.
Inderscience Publishers
Traffic Control Current Events and Traffic Control News RSSStudy shows that sleep deprivation can negatively affect information processing
A study in the Nov.1 issue of the journal Sleep shows that sleep deprivation causes some people to shift from a more automatic, implicit process of information categorization (information-integration) to a more controlled, explicit process (rule-based).
Study finds air traffic control tracking method reduces errors in trauma management
New research published in the June issue of the Journal of the American College of Surgeons shows that a method used by air traffic controllers tracks patient data more effectively and with fewer errors compared with current hospital methods, primarily the use of clipboards.
Experienced air traffic controllers work smarter, not harder, making up for normal mental aging
Older air traffic controllers can head off mid-air collisions at least as well as younger controllers, using experience to compensate for age-related declines in mental sharpness, a new study finds. The evidence that experience triumphs over the normal changes of aging could help to overturn myths about older workers that are contributing to the draining of the pool of skilled professionals.
Physician use of HIT in hospitals linked to fewer deaths and complications, lower costs
A study published today in the Archives of Internal Medicine, finds that when physicians in hospitals use health information technology (health IT) to its full potential there are fewer deaths, fewer complications, and lower health care costs.
New technology could revolutionize breast cancer screening
The world's first radar breast imaging system developed at Bristol University that could revolutionise the way women are scanned for breast cancer, is being trialled at North Bristol NHS Trust (NBT).
Low-cost airlines are now the new major players
Leading low-cost airlines with a preference for small, inexpensive airports are now the largest airlines in the United States and Europe, according to an MIT expert on airport design and operations, who said that airport planners in major metropolitan areas need to accept this paradigm shift and build flexibility into airport design.
Pilot error declines as factor in airline mishaps
The number of airline mishaps attributed to pilot error significantly declined between 1983 and 2002, according to an analysis conducted by researchers at the Johns Hopkins Bloomberg School of Public Health.
Go with the flow
Traffic flows account for as much as one-third of global energy consumption. But unconventional changes in managing traffic flow could significantly reduce such waste and lower harmful CO2 emissions, says Dirk Helbing.
Rural America more prepared for disaster — also more vulnerable
From winter storms, to earthquakes, to terrorism — when a disaster strikes a community, who fares better, a rural community or an urban one? A new study at the University of Illinois attempts to understand the differences in how rural and urban citizens across the US respond to disaster.
Biological motors sort molecules one by one on a chip
Researchers from Delft University of Technology's Kavli Institute of Nanoscience have discovered how to use the motors of biological cells in extremely small channels on a chip.
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