In the past, there was often an automatic reaction to increased traffic: just widen the roads, says Mark Poch, the Bellevue Transportation Department's traffic engineering manager.

贝尔维尤运输部交通工程经理马克·波奇说，过去，人们对交通量的增加往往有一种自动的反应：只要拓宽道路就行了。

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At this rate, the number of cars in the city is expected to pass the 5m mark by February, while the average speed of the traffic slows ever closer to bicycle pace.

按照这种增长速度，到明年二月份，汽车保有量有望突破500万辆，到时平均交通运行速度将降低至曾经的脚踏自行车了。

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Dr Blewett said he believed a range of companies would voluntarily use traffic light labelling on their products, not just those that could display a green mark.

凯特博士相信一些公司会愿意在他们的食品上使用“红绿灯”标签办法，而不仅仅是在产品上贴一个绿色标签。

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Weak traffic and off-mark products led to slower than expected sales in May, when wet, chilly weather may have provided too weak inspiration for consumers to start shopping for summer items, analysts at RBC Capital Markets say.

FORBES: May Sales Show Tighter Times Ahead For Retailers

And here's a novel traffic scheme, a roundabout to mark a bend in a road.

BBC: News Online

It also called for a "traffic light" system in stores to mark out healthy and unhealthy foods, and for annual fat tests for children.

BBC: NEWS | UK | Wales | Cookery lessons 'to cut obesity'