A school bus is a kind of bus designed(设计) for student transport：carrying children and teenagers to and from school. So safety(安全) is very important. We should have the same logo(标志) on the school bus and colour it yellow so that people can see it from far away. People design everything on the bus to keep the students safe. For example, we can push the windows easily and the computer can ask the student to wear theseat beltwhen the student sits on the seat. There is at least one teacher to look after the students on the bus. When the students get on or get off the bus, the driver should use the lights to tell other cars, and then the other cars can wait until the students are safe. When a school bus is on the way, we can know where it is and what happens to it on the computer.

    In a word, we must find ways to make sure the traffic safety is the first priority.