Officials said they believe a signal failure may have caused the crash, or collision.

官员们表示，他们认为可能是障导致了列车相撞。

Local media report accidents with dozens of injured due to malfunctioning traffic lights.

当地媒体报道了交通障导致数十人受伤的事。

Due to a signal failure ahead, we will be delayed by approximately 20 minutes.

由于前方障，我们将延误大约20分钟。

But if the signals glitch and get out of sync, accidents happen.

但如果出现障并不同步，事就会发生。

A well-designed composite tool using the composer could catch that failure signal, maybe loop back to step three, adjust a parameter based on the error, and try step four again automatically.

使用合成器设计得当的复合工具可以捕捉到障，或许会自动返回到第三步，根据错误调整个参数，然后再次尝试第四步。

So, while the horn is primarily a means  of communication, it is not the only way the aircraft can send a signal, to warn of  failure.

因此，虽然喇叭主要是种通方式，但它并不是飞机发出障警告的唯方式。

Yeah, the trains break down. The switching systems are old. Robert Shaw is robbing them right and left.

是的，列车时常发生障，切换系统老旧不堪，罗伯特·肖左右逢源地从中渔利。

All eastbound trains have been cancelled due to faulty signals.

【bound】由于障，所有东行列车均已取消。