The ongoing study will address more questions about benefits and risks of healthy modes of transportation.

接下来的研究将处理更多有关健康交通模式的效益和风险问题。

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A study by the Texas Transportation Institute found that in 2007, metropolitan-area drivers in the US spent an average of 36 hours stuck in traffic-up from 14 hours in 1982.

德克·萨斯交通研究院的一项研究表明，2007年美国大城市区的驾驶员一年要在堵车上平均花费36个小时，而1982年只有14小时。

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The ongoing study will address more questions about benefits and risks of healthy modes of transportation. But for now, I'd steer clear of high traffic areas.

接下来的研究将处理更多有关健康交通模式的效益和风险问题。但现在，我就避谈交通流量大的区域了。

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That is backed up by another Department of Transportation study, in 1999, of 500 Mexican trucks caught going deeper into the United States.

ECONOMIST: NAFTA

The senators cited a Virginia Tech Transportation Institute study that found that truck drivers who texted while driving were 23 times more likely to crash or get into a near-accident than undistracted drivers.

CNN: Senators push nationwide ban on texting while driving

Moreover, a study by the Texas Transportation Institute found that highways with diamond lanes lacking a physical barrier separating them from regular lanes have a 50 percent higher incidence of injury accidents.

FORBES: Diamond Lanes: Another Failed Energy / Environmental Policy