Square traffic lights

"Why are traffic lights round? Because they're products of their time — when they were invented a spherical bulb was the only thing that would light the glass evenly. Now that there are a host of lighting technologies (like LEDs) that don't have this limitation, Art Lebedev design studio throws this idea out there: square traffic lights. More than just a quirky take on a long-standing urban fixture, the edgy lights have a greater surface area than round lights of the same size (a diameter equal to the length of one of the square's sides). That means more light, and a better chance of noticing them from further out."

via dvice.