There are many possible side effects of Tren use, and it is far from the most side effect friendly anabolic steroid. Many of the side effects of Tren are similar to other steroids, but Tren also carries some possible side effects that most steroids do not.
Red Light, Green Light : The Invention of the Traffic Signal. The traffic signal was first invented in 1912 â by a Detroit policeman named Lester Wire â as a two-color, red-and-green light with a buzzer to warn pedestrians ahead of the impending transition.
Morgan had witnessed a serious accident at an intersection, and he filed a patent for traffic control device in 1922. In 1923, the U.S. Patent Office granted Patent No. 1,475,074 to Garrett Morgan for his three-position traffic signal.