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Michael Reilly edited this page May 23, 2018 · 1 revision

TAZs (with 1454 zones) were used in the last two models. They are often called zones. We want to keep them in the model. But we have new TAZs for Travel Model Two that have over 6000 zones. We want to call these taz2 and could also use zone2. Parcels nest in either system but otherwise the systems are mostly incompatible.

TAZ-level variables are used to drive the Population Synthesizer

Income Variables

are directly summarized from MAZ-level counts

  • q1
  • q2
  • q3
  • q4

HH Size and Worker Count Variables

are built from regressions based on income and historic TAZ proportions AND THEN the result is scaled to match the regional count of people and workers

  • s1
  • s2
  • s3
  • s4
  • w0
  • w1
  • w2
  • w3
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