Chengdu's Traffic Police Are Coming for Slow Drivers
Chengdu has deployed a smart traffic system that singles out 'turtle-speed' drivers who crawl along main roads while using their phones. One driver was overtaken 18 times in 200 metres — and then fined.
Traffic enforcement in most of the world is built around one assumption: that the dangerous driver is the fast one. In Chengdu, the police have been broadening that definition. The city's traffic authority has begun running a smart system that hunts down "turtle-speed" drivers — people crawling far below the flow of traffic on main roads — and one case in particular has made the policy famous.
A main road in the city, 200 metres of it: in that stretch, one car was overtaken eighteen times. When police reviewed the footage, the reason for the crawl was a familiar one — the driver was scrolling a phone while driving, and was punished accordingly. CCTV News's report on the case, under the hashtag "treating turtle-speed driving," drew more than 1,500 likes and spent the day high on Weibo's trending board.
The story resonates because slow driving has become one of those grievances every Chinese commuter recognises. The language itself is settled: guisu, "turtle speed." A car tootling at half the limit in the overtaking lane does not just delay everyone behind it; road-safety researchers note that large speed differentials within a lane are a classic setup for rear-end collisions and sudden lane changes. Chinese commenters treat the slow-and-distracted driver as a tax on everyone else's morning.
What makes Chengdu's approach notable to an outside reader is the machinery behind it. The system automatically locks onto abnormally slow vehicles on monitored roads, then reminds the driver through several channels — and, crucially, cross-checks what they were doing: whether they were on a call, or, as in the famous case, watching a screen. Enforcement of phone use at the wheel has traditionally depended on a lucky patrol car happening to pull alongside. A camera-backed system that infers the phone from the driving pattern changes the arithmetic of getting caught.
Reaction on Weibo was strikingly one-sided for a story about policing. "I raise both hands in support," wrote a motoring commentator with more than a hundred likes, adding that he hoped it becomes standard practice. Another popular reply inventoried what he had observed in the slow lane on his own morning commute: people on calls, people eating breakfast, people still half asleep — and invited others to name stranger sights. The comment sections read like a release of accumulated frustration; for once, the surveillance is aimed at the driver everyone else has been muttering about.
The crackdown also says something about how Chinese cities now govern the road. Chengdu's system is part of a broader build-out of "smart traffic" — camera networks read by software that flags behaviour rather than waiting for a crash or a complaint. The same infrastructure that catches a crawler at 200 metres could, in principle, watch anyone; that trade-off draws little protest in this particular case, where the target is behaviour nearly every driver has suffered behind.
Whether "turtle-speed" enforcement spreads beyond Chengdu is the open question. For now, the city has settled on a simple message: the offence that gets you noticed is not only driving too fast — it is driving too slowly to be going anywhere.