“If we have 10 vehicles on the road that are all saying this road is getting icy, and we can infer that from the data coming in, we can dispatch a snowplow or truck to lay down sand,” said Matthew McAllister, smart city project manager for the city and county of Denver, speaking earlier this month at the Internet of Things World conference in Santa Clara, Calif.

“While that snowplow is heading out, we can make its route a lot more efficient by giving it an extended green [light] time,” he added. “So, rather than coming to an unnecessary stop … we can hold that green, for say three more seconds, to make sure that the vehicle gets through.”
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