If you're already in the middle of the intersection when the light turns red, the system will not activate the cameras (this is not a traffic violation in most areas).

如果灯变红时你已经在交叉路口的中间，系统不激活摄像机。

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The problems of traffic congestion will not disappear in a hurry.

交通堵塞问题不会很快消失。

《柯林斯英汉双解大词典》

If you are looking at your phone while walking, you might not see a car come or traffic lights turn red.

如果你边走边看手机，你可能看不到车辆开过来或交通灯变红。

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"I can go to the Hamptons on a Friday night and not hit a traffic jam, " Mr. Schwartz said, concluding an interview with a gentle boast.

WSJ: Decoding Traffic In a Jammed City

Tackling these problems points to a strategy that delivers an overall reduction in traffic levels, not merely a redistribution of existing traffic levels.

ECONOMIST: Excessive

But many organizations do not feel comfortable having a third party filter all their traffic and do not need the data distribution of a CDN.

FORBES: DDoS: coming to a network near you