It would be sure to increase traffic in the area, causing congestion and making it unsafe for children to play outside.

工厂一定会使当地的交通流量增加，导致交通阻塞，使得小孩在外面玩耍变得不安全。

youdao

There is heavy traffic in the downtown area tonight.

今夜闹市区交通繁忙。

《牛津词典》

Apparently, there were some low clouds in the area, but mostly it was just miscommunication between the pilots and the air traffic controllers.

显然，该地区有一些低空云层，但主要是飞行员和空中交通管制员之间的沟通失误。

youdao

The Highways Agency wants to change its layout to stop queuing traffic in the area.

BBC: Air Balloon Cottages

Police stopped traffic in the area after the blast which left a crater two metres (six feet) wide in the asphalt.

BBC: Car bomb rocks Bogota suburb

The city council said it wanted more time to consider the effect a stadium would have on traffic in the area.

BBC: Bristol Rovers proposed new stadium from above