• Multi-Activity Access: How Activity Choice Affects Opportunity 

      Cui, Mengying; Levinson, David M
      Published 2020-01-01
      It is commonly seen that accessibility is measured considering only one opportunity or activity type or purpose of interest, e.g., jobs. The value of a location, and thus the overall access, however, depends on the ability ...
      Open Access
      Article
    • Towards a General Theory of Access 

      Levinson, David M; Wu, Hao
      Published 2020-01-01
      This paper integrates and extends many of the concepts of accessibility deriving from Hansen’s (1959) seminal paper, and develops a theory of access that generalizes from the particular measures of access that have become ...
      Open Access
      Article
    • Unifying Access 

      Wu, Hao; Levinson, David M
      Published 2020-05-06
      Since Hansen’s seminal 1959 paper, measures of access have evolved with technology and through practical applications. The myriad of distinct but familially related access measures created many more options to measure ...
      Open Access
      Preprint