当施工区路段发生交通拥堵或交通事故时，应该采取应急处理机制或紧急救援系统，以保障施工区路段的交通畅通与安全。
When traffic jams or accidents occur in the work zones, we should take emergency handling mechanism or emergency rescue system for the safety of work zone.
当施工区路段发生交通拥堵或交通事故时，应该采取应急处理机制或紧急救援系统，以保障施工区路段的交通畅通与安全。
When traffic jams or accidents occur in the work zones, we should take emergency handling mechanism or emergency rescue system for the safety of work zone.
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