1.
traffic jam, traffic congestion
A condition where vehicles on a road are moving very slowly or not at all due to heavy traffic volume, accidents, or road work.
交通渋滞で遅刻した。
I was late because of a traffic jam.
連休はいつも交通渋滞がひどい。
Traffic congestion is always terrible during long weekends.
事故の影響で高速道路に交通渋滞が発生している。
Traffic congestion has occurred on the highway due to an accident.
交通渋滞 is composed of 交通 (traffic) + 渋滞 (congestion, stagnation).
COMMON COLLOCATIONS:
- 交通渋滞が発生する: traffic congestion occurs
- 交通渋滞に巻き込まれる: to get caught in a traffic jam
- 交通渋滞を避ける: to avoid traffic congestion
- 交通渋滞情報: traffic congestion information
USAGE: In casual speech, 渋滞 alone is more common. The full form 交通渋滞 is used in news reports, official announcements, and more formal contexts.