Passengers per hour per direction or passengers per hour in peak direction (PPHPD or p/h/d) is a measure of the capacity of a rapid transit or public transport system.
Read more about Passengers Per Hour Per Direction: Directional Flow
Famous quotes containing the words hour and/or direction:
“I don’t know Who—or what—put the question, I don’t know when it was put. I don’t even remember answering. But at some moment I did answer Yes to Someone—or Something—and from that hour I was certain that existence is meaningful and that, therefore, my life, in self-surrender, had a goal.”
—Dag Hammarskjöld (1905–1961)
“It is not easy to construct by mere scientific synthesis a foolproof system which will lead our children in a desired direction and avoid an undesirable one. Obviously, good can come only from a continuing interplay between that which we, as students, are gradually learning and that which we believe in, as people.”
—Erik H. Erikson (20th century)