路轨

shì gù yuán yīn yǔ lù guǐ duō wān dào yǒu guān

事故原因与路轨多弯道有关。

The cause of the accident is connected to the fact that the track contains many bends.

wǒ men yīn qián fāng lù guǐ gù zhàng wǎn diǎn le

我们因前方路轨故障晚点了。

We were delayed because of a problem further along the line.