Dead Man's Switch
The earliest safety device was the dead man's switch, which requires no track-side equipment.
Read more about this topic: Automatic Train Protection
Famous quotes containing the words dead, man and/or switch:
“Every boy was supposed to come into the world equipped with a father whose prime function was to be our father and show us how to be men. He can escape us, but we can never escape him. Present or absent, dead or alive, real or imagined, our father is the main man in our masculinity.”
—Frank Pittman (20th century)
“He touched the soil, caressing its grains between his fingers: “I am this: this earth here, and I have it in my blood. Look at my color; it seems as though the earth faded onto me and onto you too. This country belongs to the black man and each time others tried to take it away from us, we mowed down injustice with our machetes”.”
—Jacques Roumain (1907–1945)
“Uncritical semantics is the myth of a museum in which the exhibits are meanings and the words are labels. To switch languages is to change the labels.”
—Willard Van Orman Quine (b. 1908)