Montreal monitoring city traffic via drivers’ Bluetooth

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Rather than rely on once-yearly spot checks of traffic throughout the city, Montreal, Canada, decided to build a more comprehensive picture of what was working well, and what wasn’t working very well, around the city. Working with traffic management company Orange Traffic, the city installed more than 100 sensors along the busiest vehicular routes. The sensors pick up mobile phone Bluetooth signals, making the system inexpensive to use and install as no additional hardware or devices are needed. Once the sensors pick up a Bluetooth signal, they track it through several measurement points to get an idea of how fast…

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