His quick reaction saved nearby drivers, who would certainly have plunged into a crater along with a section of crumbling road as it dropped suddenly in Hangzhou city, Zhejiang province.
Just moments before the two-meter-deep sinkhole appeared in the middle of a busy road, an eagle-eyed traffic cop cordoned off the cracking area with cones.
He barely avoided being run over in process himself, thanks to impatient motorists.
Security cameras captured the chaos on Thursday, which was then shared online by a local news channel.
CCTV News reports that "further investigation over the collapse is currently underway".
Nice to know someone is paying attention to things going on around them.