Several cities have installed dynamic toll systems whose charges vary according to traffic flow.

几个城市安装了动态收费系统，按交通流量收费不同。

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In some places, a small toll at rush hour and a few buses will be enough to keep traffic running smoothly indefinitely.

在一些地方，高峰期的少量过路费和一些公汽就足以保障交通在不确定情况下的平稳运行。

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Traffic had already backed up at the East Coast's perennial chokepoint: the Interstate 95 toll plaza in Newark, Del. , where construction is adding to the bottleneck.

在东海岸的长期的阻塞黑点——特拉华州纽瓦克95州际公路的收费处，交通已经堵塞，建筑施工更加重了瓶颈效应。

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It would be an interesting exercise to privatize the eight Illinois River locks by simply auctioning them off to the highest bidder, who could then charge whatever toll the traffic would bear.

FORBES: A river of subsidies

It would be an interesting exercise to privatize the eight Illinois locks by simply auctioning them off to the highest bidder, who would then be free to charge whatever toll the traffic would bear.

FORBES: A river of subsidies

Critics immediately panned the study, saying it didn't analyze negative economic effects, including the toll of truck traffic on roads and increased health care costs.

WSJ: NY groups claim industry bias in fracking study