In 2007 its congested roads cost the country 4.2 billion working hours and 10.6 billion litres of wasted petrol, according to the Texas Transportation Institute.

根据德州运输研究所的研究，2007年的道路堵塞，使得美国浪费了42亿个小时的工作时间，以及106亿公升的汽油。

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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 finding came in a report published on July 8th by the Texas Transportation Institute, which for years has rung an alarm bell from central Texas in the hope that those in Washington, DC, will hear.

这一研究结果公布在7月8号德克萨斯州运输协会出版的一份报告上，这一协会常年在德克萨斯州中心地区向人们敲响警钟，以望华盛顿的人民也可以听到。

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Instead it has a couple dozen, says Texas Transportation Institute research engineer Tim Lomax.

FORBES: Magazine Article

The Texas Transportation Institute recently claimed they do, although their methodology has been flawed before.

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For travel delays, we used the Texas Transportation Institute's 2005 Urban Mobility Report, which compiled the annual delay per traveler for urban areas.

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