North American Train Control Systems
In North America, train operation over any specific section of track is governed by a specific set of rules in the railroad company's Rulebook. The rules and sections differ from company to company, but they all cover the same basic modes of operations.
Read more about this topic: North American Railway Signaling
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“We might hypothetically possess ourselves of every technological resource on the North American continent, but as long as our language is inadequate, our vision remains formless, our thinking and feeling are still running in the old cycles, our process may be “revolutionary” but not transformative.”
—Adrienne Rich (b. 1929)
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—“Censor,” U.S. women’s magazine contributor. American Ladies Magazine, pp. 337-340 (August, 1828)
“The average parent may, for example, plant an artist or fertilize a ballet dancer and end up with a certified public accountant. We cannot train children along chicken wire to make them grow in the right direction. Tying them to stakes is frowned upon, even in Massachusetts.”
—Ellen Goodman (b. 1941)
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“Our little systems have their day;
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And thou, O Lord, art more than they.”
—Alfred Tennyson (1809–1892)