HSK 7-9
逆行
nìxíng动
to go the wrong way; to go against one-way traffic regulation
司机逆行导致道路堵塞。
Sījī nìxíng dǎozhì dàolù dǔsè.
The driver went the wrong way and caused a traffic jam.
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Appears across levels (7-9) in the HSK 3.0 word list.