你路上小心。

Nǐ lùshang xiǎoxīn.

Be careful on the way.

今天路上车很多。

Jīntiān lùshang chē hěn duō.

There are many cars on the road today.

我在路上看到很多人。

Wǒ zài lùshang kàndào hěn duō rén.

I saw many people on the road.