traffic disaster; traffic accident
A somewhat formal or written term for a traffic-related calamity, often implying serious harm or a large-scale incident. In everyday speech, 交通事故 is more common.
Many lives were lost in that traffic disaster.
Safe driving is required to prevent traffic accidents.
Compound of 交通 (traffic) and 禍 (calamity, disaster). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.