Tuesday, September 15. 2009

How few cell phones are needed to track traffic?

"Results suggest that a 2-3% penetration of cell phones in the driver population is enough to provide accurate measurements of
the velocity of the traffic flow."

That's just one conclusion of a study titled Evaluation of Traffic Data Obtained via GPS-enabled Mobile Phones: the Mobile Century field experiment (pdf) from UC Berkeley's Institute for Transportation Studies.

- via Docuticker

Tuesday, September 8. 2009

TomTom Shares OpenLR Standard: What is it?

The press release says:

OpenLR has been designed for traffic information systems and dynamic route
guidance, and is available as an open-source technology a
http://www.tomtom.com/page/openLR. It can easily be adapted to the requirements
of system integrators, and the technical community can contribute with their
ideas to improve it.

Location data can range from static road sign information to highly dynamic
traffic and weather situation information as well as safety-critical information
- anything that needs to be accurately linked to a specific piece of or position
on the road network. The OpenLR technology allows location content providers to
reference any location on any navigable map, completely royalty-free.

Continue reading "TomTom Shares OpenLR Standard: What is it?"

Podcast: What Your Relationship with your GPS Says About You

In this special "vacation" edition of the podcast, our editors turn their attention to a piece of geospatial technology they both use: the Garmin Forerunner "GPS watch." There's quite a bit of disagreement about what's expected of the device and what's wanted in future versions.

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