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Urban traffic congestion state detection has been a problem of concern at home and abroad. The mainstream and traditional ways to detect traffic congestion state include manual survey, fixed traffic information collection technology and mobile traffic information collection technology. These methods all have obvious flaws such as the sample size of these methods is limited and additional equipment...
Traffic information collecting and distribution are necessary in intelligent transportation systems, which require two-way communications for cars to transmit and receive traffic information. The GSM network has an LCS function, and cell phones using AGPS technology could provide location with relatively high accuracy. Road traffic information, such as speed, rates of flow, density, and travel time,...
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