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:
“... two great areas of deafness existed in the South: White Southerners had no ears to hear that which threatened their Dream. And colored Southerners had none to hear that which could reduce their anger.”
—Sarah Patton Boyle, U.S. civil rights activist and author. The Desegregated Heart, part 1, ch. 16 (1962)