a place where vehicles slow down or stop because the road narrows or there is an obstruction

瓶颈, 交通瓶颈
to become congested or gather closely together, often referring to traffic or crowds becoming tightly packed or slowed down

聚集, 拥挤
to move swiftly and briskly

飞奔, 疾走
to closely observe someone or something to stay informed about their activities or whereabouts
a time of day at which traffic is the heaviest because people are leaving for work or home

高峰时段, 交通高峰期
the strip of land on the side of a road where vehicles can stop in an emergency

路肩, 应急停靠区
to lose control of a vehicle, causing it to spin around or slide uncontrollably, typically on a slippery or wet surface

打滑, 失控
a traffic accident involving two or more vehicles that have collided, often causing a messy or complicated situation on the road

交通事故, 碰撞
to move toward a destination or goal, often with effort or difficulty, typically involving a gradual or slow progress
