Early traffic lights had only red and green, which unsurprisingly made intersections rather chaotic. Who invented the yellow ...

The traffic light shifts to yellow just as you approach the intersection. For a second, everything feels uncertain. Your foot hovers between the gas and the brake. The car behind you is close. You’re ...

Looking into your rearview mirror and seeing the flashing lights of a police car behind you is likely one of the last things you want to see as a driver. After all, most of us associate those flashing ...