Maddie's Do You Know? - Series 2: Traffic Lights and Emergency Lights - Signed

Name: Maddie's Do You Know? - Series 2: Traffic Lights and Emergency Lights - Signed
Description: Maddie learns how traffic lights help vehicles travel safely through road junctions, then visits a factory making emergency warning lights.

Maddie learns how traffic lights help vehicles travel safely through road junctions, then visits a factory making emergency warning lights.