山东青岛：校车“体检”迎开学

Group 1 - The article highlights the safety inspections conducted by traffic police on school buses in Qingdao, Shandong Province [1][2][3] - The inspections include checking the installation of fire extinguishers and the safety of rearview mirrors on the school buses [3] - Technicians and drivers are involved in the maintenance of the school buses during these safety checks [4][5]