The accident was caused by human error.

这一事故是人为错误造成的。

《新英汉大辞典》

The potential for safer cars means accident statistics would drop: some 94% of road accidents in the U.S. involve human error.

汽车可能会更安全，这意味着交通事故的数量会下降：在美国，约94%的交通事故涉及人为失误。

youdao

The report discloses that human error was to blame for the accident.

报告披露这次事故是人为原因造成的。

《牛津词典》

And, of course, Google is moving quickly forward with road-worthy autocars that have accumulated 300, 000 miles with only one (human error) accident.

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It was unclear whether human error may have played a role in the accident.

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Human error is the most likely cause of an accident.

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