PHOENIX — When a streetlight turns yellow, how much time do drivers need to safely stop? An Operation Safe Roads investigation found many Valley cities were shortchanging the yellow. Now, more than ...

So, you’re driving a car at half the speed of light. (Both hands on the wheel, please.) You turn on the headlights. How fast would you see this light traveling? What about a person standing by the ...

As students return to class, drivers are seeing flashing lights in school zones across Knox County. Behind the scenes, the county’s Engineering & Public Works Department is making sure those warning ...