Don't close the window completely. Closing the window will cause a large temperature difference between the inside and outside of the car, and the front windshield inside the car will produce fog, which will affect the line of sight. Wipe the left and right rearview mirrors, wipe the rearview mirrors after getting on the bus, and turn on the wiper. Shoes, brakes, accelerator and clutch can be dried together with water to prevent feet from slipping and affect the examination effect.