Just as traffic backs up at some intersections only in heavy traffic, data can back up in your system in critical areas only when under heavy load.

正如繁忙交叉点处的流量需要备份一样，系统关键区域的数据也只会在负载量大时才会备份。

youdao

Through an analysis of some crossing accident data, it shows that most accidents at intersections involve vehicles turning right and their right-hand pedestrians.

通过对一些交叉口事故数据的分析表明，交叉口的人车冲突事故，大多数发生在主路右转车辆和右方行人之间。

youdao

At some big intersections, cops in day-glo yellow vests directed traffic.

FORBES: New York City After Hurricane Sandy

Japanese candidates park their cars at intersections with heavy foot traffic and make speeches with microphones plugged into portable amps in front of some of the busiest train stations in the world.

CNN: Can Tokyo learn from the American political 'matsuri'?