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Floating car data (FCD), also known as floating cellular data, is a method to determine the traffic speed on the road network. It is based on the collection of localization data, speed, direction of travel and time information from mobile phones in vehicles that are being driven. These data are the essential source for traffic information and for most intelligent transportation systems (ITS). This means that every vehicle with an active mobile phone acts as a sensor for the road network. Based on these data, traffic congestion can be identified, travel times can be calculated, and traffic reports can be rapidly generated. In contrast to traffic cameras, number plate recognition systems, and induction loops embedded in the roadway, no additional hardware on the road network is necessary.
(tags: surveillance cars driving mobile-phones phones travel gsm monitoring anpr alpr traffic)
CiteSeerX — The Confounding Effect of Class Size on the Validity of Object-oriented Metrics
A lovely cite from @conor. Turns out the sheer size of an OO class is itself a solid fault-proneness metric
(tags: metrics coding static-analysis error-detection faults via:conor oo)
How a group of neighbors created their own Internet service | Ars Technica
Orcas Island, WA. impressive stuff
(tags: community diy internet wa wireless networking orcas-island)