Keep the traffic flowing.

保持交通畅通无阻。

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The traffic engineer's work then was to keep the traffic flowing, not to design the road.

当时交通工程师的工作是保持交通畅通，而不是去设计道路。

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Such systems are sometimes used to set motorway tolls (which rise and fall with demand in an effort to keep traffic flowing), or to adjust the price of energy in electricity markets.

这一机制有时会被用于设置高速公路通行费(为保证交通顺畅，通行费因需求而上涨、下调)，或者用于调整电力市场上能源价格。

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Keep traffic flowing, reduce the needed number of toll takers, make life easier for consumers, all at the same time.

FORBES: Connect

The short-term fix would keep traffic flowing on a critical economic corridor linking Seattle and British Columbia.

WSJ: Crumpled Bridge in Washington State to Get Temporary Fix

Under the new system, software will analyze the entire Norfolk network every hour and, to keep traffic flowing efficiently, suggest changes in speed, routing and train meeting places.

FORBES: Magazine Article