（二) 机器观察1 、交通流量记数器(Traffic counters) 2 、人员计量器(People meter) 一种计算机控制的微波收视率系统，可以整晚传送人口统计信息以测量电视观众。
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According to the state of Washington, this is the speed that 85 out of 100 drivers choose on their own, as measured by special traffic counters.
FORBES: The High Price Of Speeding
Sadik-Khan counters that she works with the city's 59 community boards and runs extensive analyses of traffic patterns before blocking off streets.
FORBES: Companies, People, Ideas
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