If you ever wondered why the signs that you see on the highway, particularly green, here are some safety-based reasons you ...

When you’re driving down the highway, you naturally pay attention to traffic signs. But do you ever think about why they look the way they do or why they’re a certain color? Take the green ones. Green ...

Q: Doug Brown of Moreno Valley asked about the large green signs that hang above freeway lanes that indicate the distance to upcoming exits. The new green signs are covered with a clear protective ...