Correct
拥塞
/ yōngsè /
Strokes
Definition
to be clogged up/to be congested (traffic, computer network etc)
Example
As a Verb
jam; congest
1
Dàolù
道路
yánzhòng
严重
yōngsè
拥塞
。
The road was heavily congested/jammed.
2
Wǎngluò
网络
yōngsè
拥塞
network congestion
3
Shūdǎo
疏导
yōngsè
拥塞
de
的
jiāotōng
交通
clear up traffic congestion
4
Huǎnjiě
缓解
jiāotōng
交通
yōngsè
拥塞
relieve the traffic congestion/jam