HSK 4
Jiāojǐng tíxǐng dàjiā kāichē yào zhùyì ānquán.
The traffic police remind everyone to drive safely.
HSK 5
Rúguǒ yǒu shìgù, qǐng dǎ diànhuà gěi jiāojǐng.
If there's an accident, please call the traffic police.
HSK 6
Jiāojǐng zài lùkǒu zhǐhuī jiāotōng.
The traffic police are directing traffic at the intersection.
