As the classic adjacent exits and entrances, weaving areas are the keystone and difficulty of traffic study.

交织区作为典型的相邻出入口，是交通领域研究的重点和难点。

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Resistance function of urban road is the key and difficult problem in traffic study. It plays a vitally important role in traffic assignment.

城市道路的路阻函数是交通研究中的关键点和难点，对交通分配起着至关重要的作用。

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"We did a two-year traffic study to analyze exactly how every single vehicle moves through Manhattan, " she says about her decision to create the Times Square pedestrian plaza.

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Current municipal traffic monitoring systems study individual stretches of road that use induction loops to sense the passage of cars, or complex camera systems that capture licence plates.

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One study estimated that traffic congestion wasted 4.8 billion hours and 1.9 billion gallons of fuel a year for urban Americans.

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