Most countries in Europe use similar road signs. This makes it easy for visitors to understand them. For example, a yield sign is 1 an inverted triangle. It’s white or yellow and has a red 2 around it. A traffic light sign is similar, but the triangle is not inverted— the wide part is at the bottom. There are three 3 inside the triangle. The one at the top is red. The one 4 is yellow, and the bottom one is green, just like a traffic light. There are 5 on the sign.