Revisiting the notion of induced traffic through a matched-pairs study

  title={Revisiting the notion of induced traffic through a matched-pairs study},
  author={Patricia L. Mokhtarian and Francisco J. Samaniego and Robert Shumway and Neil H. Willits},
In investigating the question of the existence of "induced demand" in connection with highway expansion projects, Hansen et al. (1993) studied eighteen California state highway segments whose capacities had been improved in the early 1970s. For the present study, these segments were paired with control segments that matched the improved segments to unimproved ones with regard to facility type, region, approximate size, and initial volumes and congestion levels. Taking annual data for average… 
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