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The movements of people between various origins and destinations in an urban road network are sensitive to changes in the network which increases the capacities of certain links. The effects of improvements in some links are not transmitted equally to all portions of the network. The road network may be partitioned into regions to test the extent to which the fields of network effects extend into other regions. Though not entirely impermeable, the boundaries stand up well in delineating noninteracting parts of the network. [ABSTRACT FROM AUTHOR]

Regional transport investment planning has traditionally assumed that virtually all the relevant information necessary to successful planning is known with complete certainty. More realistically, these investment decisions can be viewed as taking place in an environment where most of the necessary information is not known with any degree of certainty and where unpredictable events might alter the suitability of investment decisions made at a previous point in time. In such a decision-making situation, it is reasonable to select transport investment projects which have the best chance of being good investment choices in many different future operating environments. Though this may result in a less than optimal investment package in the future which is actually realized, it is most unlikely that the chosen investment package will be a poor choice. Strategies for effecient decision making in an environment of uncertainty can be derived by simple modification or models used in studies which assume a complete certainty of outcomes. Several such strategies are illustrated for a road investment planning problem in South Sulawesi. Indonesia. [ABSTRACT FROM AUTHOR]

Explores the importance of transportation on politics in Canada. Resistance of the play of history to the effacement by geography; Proclamation of freedom of navigation; Rivalry between the transportation route of the St. Lawrence and the Hudson.