交警在路口指挥交通。
jiāojǐng zài lùkǒu zhǐhuī jiāotōng 。
The traffic police are directing traffic at the intersection.
我看到一个交警在检查行驶证。
wǒkàndào yígè jiāojǐng zài jiǎnchá xíngshǐ zhèng 。
I saw a traffic police officer checking driving licenses.
请遵守交警的指示。
qǐng zūnshǒu jiāojǐng de zhǐshì 。
Please follow the instructions of the traffic police.