Does Chongqing need a certificate of no crime to drive a bus?

Are you asking if Chongqing bus drivers need a certificate of innocence? Yes

According to the recruitment data of official website of Chongqing Public Transport Group, Chongqing bus drivers need a three-year crime-free certificate issued by the local public security organ. Therefore, Chongqing bus drivers need proof of no crime.

Chongqing bus drivers also need to meet the requirements of being under 60 years of age, having a junior high school education or above, obtaining A 1 driver's license and having more than 3 years of actual driving experience.