Xiaomei, how did you get here today?

I came by car. There were so many vehicles on the road!

That's right. When we go out, we can see cars, buses, and bicycles.

I also saw a red light, and Mom told me to wait.

That's right. Stop at a red light and go at a green light. Make sure to look carefully before crossing the street.

What about the yellow light? Does it mean, "Slow down"?

Yes. A yellow light reminds everyone to be careful.

I understand. When I go out, I need to watch the road and hold an adult's hand tightly.

You remembered that very well. Traveling this way is much safer.