X

Photos: Nokia's Mobile Century traffic project

So your brand new cell phone has built-in GPS and high-speed internet connectivity. Why then, can't it be used as a traffic probe, reporting its speed and location to a central server to provide accurate, real-time information on current traffic conditions? That was the question being answered today in Northern California in a large-scale field test called "Mobile Century" being conducted by Nokia, The University of California Berkeley, and the California Transportation department. Using a fleet of 100 test vehicles, researchers spent the day monitoring cars that were equipped with specially programmed Nokia N95 smart phones, which intermittently reported their locations to a central command center to give a read out on traffic conditions in real-time.

CNET Reviews staff
Nokia_GPS_1_440.jpg
1 of 7 CNET Networks
Students from UC Berkeley provided a supply of test drivers who were sent out in three teams with different assigned routes. Cars were sent out in waves of three vehicles per minute.
Nokia_GPS_3_440.jpg
2 of 7 CNET Networks
The 100 cars were deployed for seven hours on a stretch of CA I-880 between Fremont and Hayward east of San Francisco. According to the event organizers, the fleet of test cars made up less than five percent of the traffic on the stretch of road at any one time. This number is based on the current potential for the market for GPS-equipped cell phones.
Nokia_GPS_4_440.jpg
3 of 7 CNET Networks
According to the Texas Transport Institute, Americans waste 4.2 billion hours in traffic each year, consuming an extra 2.9 billion gallons of fuel, and resulting in an estimated $78 billion in total congestion-related cost. While still in its development stages, the Mobile Century project aims to reduce these figures by tapping in to an existing and growing network of GPS-enabled mobile devices for more accurate traffic reporting.
Nokia_GPS_5_440.jpg
4 of 7 CNET Networks
During the field test, researchers were able to monitor the information being sent back by the traffic probes on the route on LCD monitors. The application, which was designed jointly by Nokia's Palo Alto research lab and UC Berkeley's California Center for Innovative Transportation (CCIT), shows information on current traffic speed and estimated time to certain points on the route from a preprogrammed start point.
Nokia_GPS_8_440.jpg
5 of 7 CNET Networks
Each car was fitted with a GPS-enabled Nokia N95 running special software. Nokia says that the GPS signals in the N95 are accurate to within 30 feet and that the system can calculate the cars' speeds to within 3mph. Data from the phones was then sent wirelessly to a server for real-time processing.
Nokia_GPS_9_440.jpg
6 of 7 CNET Networks
Nokia engineers explained that a key consideration in the experiment was balancing the accuracy of traffic reporting with the privacy concerns of mobile-device owners. To ensure anonymity of the data reporting, the traffic-reporting software stripped out the identity of individual phones and encrypted the data being sent. According to Nokia, a consumer application of this technology could ensure that the phones' GPS reporting capability is only activated in areas in which traffic is likely to be a concern.
Nokia_GPS_10_440.jpg
7 of 7 CNET Networks
Current traffic data for services such as XM NavTraffic and California's 511.org is collected using static roadside or pavement-mounted sensors and cameras, which are expensive to install and maintain. One of the main objectives of today's experiment was to compare the traffic data from the mobile Nokia devices with that from static-infrastructure reporting. To compare the two sets of data, researchers were positioned along the route to take an actual reading of traffic flow, which will then be compared against the sets of data from the two monitoring systems.

More Galleries

My Favorite Shots From the Galaxy S24 Ultra's Camera
A houseplant

My Favorite Shots From the Galaxy S24 Ultra's Camera

20 Photos
Honor's Magic V2 Foldable Is Lighter Than Samsung's Galaxy S24 Ultra
magic-v2-2024-foldable-1383

Honor's Magic V2 Foldable Is Lighter Than Samsung's Galaxy S24 Ultra

10 Photos
The Samsung Galaxy S24 and S24 Plus Looks Sweet in Aluminum
Samsung Galaxy S24

The Samsung Galaxy S24 and S24 Plus Looks Sweet in Aluminum

23 Photos
Samsung's Galaxy S24 Ultra Now Has a Titanium Design
The Galaxy S24 Ultra in multiple colors

Samsung's Galaxy S24 Ultra Now Has a Titanium Design

23 Photos
I Took 600+ Photos With the iPhone 15 Pro and Pro Max. Look at My Favorites
img-0368.jpg

I Took 600+ Photos With the iPhone 15 Pro and Pro Max. Look at My Favorites

34 Photos
17 Hidden iOS 17 Features You Should Definitely Know About
Invitation for the Apple September iPhone 15 event

17 Hidden iOS 17 Features You Should Definitely Know About

18 Photos
AI or Not AI: Can You Spot the Real Photos?
img-1599-2.jpg

AI or Not AI: Can You Spot the Real Photos?

17 Photos