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...Transportation engineering and planning vol i systems david boyce northwestern university usa keywords mode guideway vehicle operations plan congestion emissions contents definitions roles effects of control future bibliography biographical sketch summary although are pervasive to modern society people tend take them for granted until something goes wrong airlines known fail as economic enterprises public encounter deficits excessive crashes occur on highways spacecraft sometimes lost understanding in terms their technological complexity important impacts is a large fascinating field study this article the individual articles that it summarizes seek capture excitement these at an introductory level encourage further reading appropriate point departure any discussion set what system various types how do they interact with environment after responding questions essay will briefly examine role social physical unesco eolss textbook definition or moving persons goods consisting three compon...