Smooth traffic flow on the road.

道路交通顺畅。

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The strategic expressway system to Lantau and North-West New Territories needs to be carefully managed to ensure smooth traffic flow.

为使这个通往大屿山和新界西北部的快速公路网保持交通畅顺，完善的管理是必不可少的。

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It's a stack interchange with layers of Bridges making a complicated network of roads allowing smooth flow of traffic though both the interstate highways.

这是一个多层桥梁的层叠式立交，组成一个复杂的道路网络，让通过两条州际公路的交通保持顺畅。

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The main issue is that it relies on drivers themselves sticking to the new limit to smooth traffic flow.

BBC: Will a borough-wide 20mph speed limit work?

The plans for the motorway near Sheffield include variable mandatory speed limits displayed on overhead and verge-mounted signs to smooth traffic flow and reduce congestion said the agency.

BBC: M1 managed motorway ?150m plans on public view

Other transport projects anticipated this year include work on a new Isle of Dogs Crossrail station, "intensification" of the work to extend the East London Line and a host of initiatives to help smooth traffic flow.

BBC: TfL budget heralds major works