Powerful Tool Crunches Commutes

Mar 08, 2005

Websites for commuters are nothing new, but researchers in Sunnyvale, Calif., have developed an advanced system with a twist: in addition to tracking traffic congestion, the program crunches data from 14,000 sensors, in some cases every 30 seconds, to decipher evolving rush-hour patterns.
The end result is www. BeatTheTraffic .com, a tool that tells commuters how long they can expect to sit in their cars, which shortcuts will get them home faster that day, and even the best time to leave the home or office.

Tied to a statistical database that tracks how traffic conditions develop—over the course of a "rush hour," for example—the software suggests a commute based on congestion that may arise, not traffic status at the time of departure. Based on such statistics, the researchers have found that many commuters can save more time by altering their departure time than they would using mass transit.

Already in use in Ariz., Alaska, Calif., Ga., Ill., Wash., Minn. and Wis., www.BeatTheTraffic.com is user-tailored down to the scale of individual roads--a result of the vast, yet disparate, government data sources.

Developed by Triangle Software with the support of NSF’s Small Business Innovation Research (SBIR) program, the tool is currently serving about 35,000 commuters, with the potential to help millions through coordination with local news media.

"By providing personalized traffic information on any number of routes or alternate routes straight to mobile phones or other text messaging devices, we try to save users time and aggravation," said Andre Gueziec, lead researcher on the project.

The website interface includes a base map of all roads, with average traffic speed and any obstacles—such as accidents or construction—mapped to each of 32,000,000 road segments. The software feeds this data to the routing engine, which can toggle travel options to find the quickest possible trip under real-time conditions.

Routes are personalized, so a user can continually track status on a number of regular paths, such as “home to grocery” or “office to gym,” all of which are continuously recomputed to reflect new problems that may arise.

The researchers are close to releasing a new application that may eventually combine the accumulating road data with weather and holiday traffic information to generate seven-day forecasts for travel. The tool is particularly useful for travelers heading out of town, or those pondering relocation who want to better gauge their new commute before making the decision to move.

"BeatTheTraffic.com is better at exploiting live traffic data from transportation departments and law enforcement than any previous system,” says Gueziec. "The site works similarly to a real-time 'Google,'" he adds, "finding specialized data for road conditions amidst a rapidly changing map."

The improvements are driven by a number of new developments, including the developers’ powerful database-driven personalization engine, flexible routing engine, and efficient archiving and retrieval system.

The system already sends a text message to cell phones and other wireless devices when a route is experiencing a substantial delay, and the researchers are now exploring ways to integrate this function with car navigation systems.

Source: The National Science Foundation

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