路上车辆很多，你过马路要小心。

Lùshang chēliàng hěn duō, nǐ guò mǎlù yào xiǎoxīn.

There are many vehicles on the road; be careful when you cross.

这条路早上七点以后禁止大型车辆通行。

Zhè tiáo lù zǎoshang qī diǎn yǐhòu jìnzhǐ dàxíng chēliàng tōngxíng.

On this road, large vehicles are not allowed after seven in the morning.

请注意，前面有很多来往的车辆。

Qǐng zhùyì, qiánmiàn yǒu hěnduō láiwǎng de chēliàng.

Please be careful; there are many vehicles coming and going ahead.