This is a television news report from Detroit (WXYZ-TV Channel 7, Detroit) with a YouTube publication date of May 16, 2013 on a traffic light malfunction that may have caused a fatal accident:
Reporter on the scene is Kim Russell at the intersection of Warren and Beechwood on Detroit’s West Side. The story shows a double green light with a green light for both Warren and Beechwood at the same time.
Another YouTube video with a television news report of a traffic light malfunction at the intersection of Rossler and Dingens (Dingers caption in the video is incorrect) in Cheektowaga, New York (from WIBV TV Channel 4, Buffalo, Niagara Falls, and All of Western New York and Southern Ontario, Published August 27, 2013):
The news reporter on the ground was Lou Raguse of WIVB-TV Channel 4 News.
This is a TV news report on “smart” traffic lights that allegedly turned green at the same time in Point Loma, San Diego, California USA (ABC 10 News, Published April 4, 2017):
In this case, the double green light was not caught on camera so the report depends on eyewitness testimony alone.
Direct link to ABC 10 article/report on traffic lights.
Follow up on April 5, 2017 on testing of traffic lights for possible problem:
Follow up video news report:
(C) 2017 by John F. McGowan, Ph.D.
John F. McGowan, Ph.D. solves problems using mathematics and mathematical software, including developing gesture recognition for touch devices, video compression and speech recognition technologies. He has extensive experience developing software in C, C++, MATLAB, Python, Visual Basic and many other programming languages. He has been a Visiting Scholar at HP Labs developing computer vision algorithms and software for mobile devices. He has worked as a contractor at NASA Ames Research Center involved in the research and development of image and video processing algorithms and technology. He has published articles on the origin and evolution of life, the exploration of Mars (anticipating the discovery of methane on Mars), and cheap access to space. He has a Ph.D. in physics from the University of Illinois at Urbana-Champaign and a B.S. in physics from the California Institute of Technology (Caltech).