The distribution of actual axle load and data of overload were obtained through traffic surveys and tests with the HPS portable wheel load scale.

通过交通量及交通组成调查，利用HPS便携式轮重仪进行现场轴重测试，得到车辆的轴载谱及超载的可靠数据。

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Such information can be collected via traffic helicopters, roadside cameras, police patrols, sensors embedded in roads, tracking units in vehicles, data from public transport turnstiles and surveys.

可以利用交通直升机、路旁相机、巡警、道路内嵌传感器、车载追踪单元、公共交通十字转门及调查方法采集获得。

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As a result, today’s traffic models rely heavily on empirical data from surveys and road sensors to plug the holes in the theory.

所以，今天的车辆行为模式在很大程度上是依靠从调查和道路传感器收集的经验数据来填补理论空白的。

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Here's my last slide The National Association of Homebuilders surveys its membership to ask them what is the traffic of homebuyers?

最后一张幻灯片,全美房屋建造协会调查了它的成员,询问他们购房者参观量的情况

耶鲁公开课 - 金融市场课程节选

Its current program, which factors in information provided by ad servers, automotive shopping Weblets, dealership traffic data and consumer surveys, generates a daily status report that lets executives know what's working.

FORBES: Magazine Article

The information was merged with email-traffic data, along with the results of weekly surveys in which employees rated how energetic and productive they felt.

WSJ: Tracking Sensors Invade the Workplace

This channel generates a good amount of traffic, but is currently off limits for the surveys which is why I had to modify the implementation code.

FORBES: First Impression: A Publisher's Take On Google Consumer Surveys