News tagged with traffic light

The traffic light turns 100

100 years ago, on August 5, 1914, the first electric traffic light was installed on a city street in Cleveland, Ohio. Siemens entered the business ten years later, when the first traffic light tower from Siemens was installed ...

Aug 06, 2014 not rated yet 1

What causes traffic gridlock?

Everyday life enters a different phase on the Tuesday after Labor Day, the unofficial start of autumn in the United States. As students and employees return from vacation, and vehicles fully flood roadways ...

Sep 07, 2011 4.2 / 5 (5) 5 | with audio podcast