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.
The 100th anniversary of the first electric traffic light system will be marked on 5 August. It was installed on the corner of East 105th Street and Euclid Avenue in Cleveland, Ohio, and had red and green lights and a buzzer to provide a warning that the colours were about the change. Traffic signals' birth in London.