目前官方尚未公布此次事故的调查结果，但媒体报道引用官方说法是信号灯故障是造成事故的关键因素。
Authorities have not yet disclosed the results of an investigation into the cause of that accident, though state media cited officials saying signaling equipment was thought to have been a key factor.
这些调查结果间接说明，这些事故应该归咎于驾驶者在刹车时错踩了油门。
The results suggest that human error was to blame in those accidents with drivers mistakenly slamming on the accelerator when they intended to jam the brakes.
但一年前发生在这个国家的另一次空难事故的调查结果至今尚未出炉；那次是一架属于另一家名为康委阿萨的国有航空公司的飞机出事，导致17人丧生。
But the country is still awaiting the outcome of an inquiry into the crash a year ago of a plane belonging to another state airline, Conviasa, that killed 17 people.
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