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.
Happy 100th birthday to the electric traffic light. Today marks what is many believe is the 100th anniversary of the world's first electric traffic signal. The first electric traffic signal was installed Aug. 5, 1914, at the corner of Euclid Avenue and East.