Abstract

Interaction among humans has always been necessary to satisfy their needs in an efficient and effective way. In this chapter, the concept of accessibility is analyzed with special focus on a meaning based on microeconomics principles. We define access as the benefit associated with an elemental interaction with a distant activity and net of transportation costs. Two definitions of access are discussed: accessibility for the traveler and attractiveness for the visited activity. After defining these concepts, we discuss how to measure them using the travel demand functions, which are specific to each traveler type. Finally, the emergence of location externalities and agglomeration economies is formulated as a natural extension of the concept of accessibility.

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