The bus remains an internal experiment for Yutong and its research partners, which include engineers from the Chinese Academy of Engineering, a state-affiliated research institution. It has yet to hit the mass market.

One of China’s biggest bus makers, the company claims it sold over 60,000 buses across 120-plus countries last year.

Yutong isn’t the first company to test out a self-driving bus. CityMobile2, a Belgium-based organization that researches vehicle autonomy across Europe, tested out an electric, self-driving bus in partnership with a French bus maker and robotics firm. But compared to that project’s demonstration, Yutong’s bus looks far more sophisticated.

Buses are arguably a more effective means of spurring mass adoption of automated vehicles than cars. They’re cheaper to operate and can hold more passengers. But whereas Google, Tesla, and car manufacturers have all invested in autonomous vehicles, most bus makers haven’t, which could delay the arrival of vehicles like the one Yutong has tested.

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