When we walk or drive a car on the road, we must be careful. There are lots of cars and buses now. They are in different colours and shapes.

    They look very cool, but they are also very dangerous. We must obey the traffic rules:

    ⑴Drive, ride or walk on the right side of the road.

    ⑵When the lights are red, we must stop.

    ⑶When the lights are yellow, we must wait.

    ⑷When the lights are green, we can cross.