Areas Where in Use
Various types of Collision Avoidance Systems have been implemented across the globe. Most if not all of these operate differently than PTC in North America, as described above.
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Famous quotes containing the word areas:
“Helping children at a level of genuine intellectual inquiry takes imagination on the part of the adult. Even more, it takes the courage to become a resource in unfamiliar areas of knowledge and in ones for which one has no taste. But parents, no less than teachers, must respect a child’s mind and not exploit it for their own vanity or ambition, or to soothe their own anxiety.”
—Dorothy H. Cohen (20th century)