Who Controls the Traffic Lights?

Series:

When Danielle was a little girl, she always wondered how the traffic lights knew when to turn red, yellow, and green as she traveled on the road with her family. If you are as curious as she was, go and slowly read this delightful rhyming book with a friend or two. Next time you are driving with your family, stop and look up at the traffic lights and they just might wave to you.