The traffic is terribly busy in the morning.

早上交通非常繁忙。

youdao

The tractor was resting against the crash barrier in the central reservation, having miraculously crossed the busy road with fast-flowing traffic.

拖拉机停靠在路中间预留地的防撞栏上，奇迹般地穿过了车流湍急的繁忙道路。

youdao

Yes, it was so peaceful comparing with the busy traffic in Beijing.

是的，跟北京繁忙的交通状况相比，这里是如此平静。

youdao

The American Heart Association recommends reducing time spent in heavy traffic or jogging during rush hour, or near busy roadways and better treatment for cardiovascular risk factors.

VOA: standard.2010.08.04

But it does indeed work in busy traffic, that much has been shown.

FORBES: Don't Tell The Teamsters: But Driverless Trucks Are Already Here

The two blasts took place in the east of the city, in an area busy with rush-hour traffic.

BBC: Pakistan attacks: Bombs strike Quetta and Karachi

Work to upgrade traffic lights at five busy locations in Cumbria has begun.

BBC: Cumbria traffic light improvements begin