Female technicians of high-speed train 'black box'

Two female technicians examine a high-speed train at China's Jinan Railway Bureau on March 7, 2018. A team of 13 female technicians at the bureau take charge of the maintenance of the on-board Automatic Train Protection (ATP) systems, which help ensure the safety of high-speed train operations. The ATP system includes a train's "black box", which records operation data that can be reviewed in the case of an abnormality or an accident. [Photo: VCG]