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:
“It’s all a matter of history.
Brandy is no solace.
Librium only lies me down
like a dead snow queen.
Yes! I am still the criminal.”
—Anne Sexton (1928–1974)
“To be a great man and a saint for oneself, that is the only important thing.”
—Charles Baudelaire (1821–1867)
“Children ... after a certain age do not welcome parental advice. Occasionally, they may listen to another adult, which is why perhaps people should switch children with their neighbors and friends for a while in the teen years!”
—Marian Wright Edelman (20th century)