96. 交通渋滞
交通渋滞は、交通が極めて混雑し、車両が非常に遅く走行したり長時間停止したりする状態です。交通量、事故、工事、車線閉鎖、悪天候などが原因になります。運転者は落ち着き、安全な車間距離を保ち、不必要な車線変更を避け、オートバイ、緊急車両、急ブレーキに注意します。渋滞中の車線合流ではジッパー方式が義務となる場合があります。
What is a traffic jam?
A traffic jam occurs when traffic becomes congested and vehicles move slowly or remain stationary because the road cannot accommodate the normal flow of traffic.
What causes traffic jams?
Common causes include heavy traffic, accidents, roadworks, lane closures, bottlenecks and poor weather.
How should you drive in a traffic jam?
Keep a safe distance, avoid sudden braking and unnecessary lane changes, and remain alert for changing traffic conditions and emergency vehicles.
Should you change lanes frequently in a traffic jam?
Usually not. Frequent lane changes can disrupt traffic flow and increase the risk of collisions. Change lanes only when necessary and safe.
What is zipper merging?
Zipper merging is a system where drivers use all available lanes until a lane ends or becomes blocked and then merge alternately into the remaining lane.
Should you leave space for emergency vehicles in a traffic jam?
Yes. Many countries require or recommend drivers to create space for emergency vehicles when traffic becomes congested or stationary.

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