This is the 283rd most frequent Japanese word.
交通
"Traffic" or "transportation."
Here, 交通 (koutsuu) pertains to the flow of vehicles and transportation during the morning rush hour, contributing to traffic congestion.
朝の通勤時の交通渋滞は多くの人々を悩ませます。
Morning commuters are troubled by traffic jams.
In this example, 交通 (koutsuu) is used to describe matters related to traffic, particularly accidents that can occur within it.
交通事故に遭わないように注意しましょう。
Let's be careful to avoid traffic accidents.
In this sentence, 交通 (koutsuu) refers to the concept of transportation as a general system and necessity within urban living.