caption: The image shows a group of people sitting on top of a bus, with one person wearing a mask and holding a mobile phone in their hand. Through the glass windows of the bus, we can see other vehicles on the road, as well as trees and buildings in the background. On the left side of the image, there is a glass window with a screen, and at the top of the roof, there are lights and a sign board with text and numbers, indicating that the bus is equipped with the latest technology to improve the safety of passengers.