Enough with the “D’s” Already — Let’s Get Back to “A”

When Robert Cervero and Kara Kockelman published their highly-cited article “Travel demand and the 3Ds: Density, diversity, and design” in 1997, they seemingly changed the transportation planning discourse forever. The idea of characterizing the built environment using three measures that happen to start with the letter D was catchy, and catch on it did. By 2010, the 3Ds had grown to seven with the addition of “destination accessibility” (what the author would call regional accessibility), “distance to transit,” “demand management,” and “demographics” (a category of control variables, not a characteristic of the built environment). The authors have heard rumors of an additional D or two since then.The Ds now prevail in the academic literature on the effect of the built environment on travel behavior. They do not consider this a good thing.

• Record URL:
  http://transfersmagazine.org/wp-content/uploads/sites/13/2018/05/Susan-Handy-_-Enough-with-the-Ds.pdf
• Record URL:
  https://merritt.cdlib.org/api/presign-file/ark%253A%252F13030%252Fm5dk0phz/1/producer%252FTSp2018H.pdf
• 
• Authors:
  • Handy, Susan
• Publication Date: 2018-5

Language

• English

Media Info

• Media Type: Digital/other
• Pagination: 3p
• Serial:
  • Transfers Magazine
  • Issue Number: 1
  • Publisher: Pacific Southwest Regional UTC
  • Serial URL: https://transfersmagazine.org/
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Accessibility; Built environment; Demographics; Land use; Transportation planning; Travel behavior
• Subject Areas: Highways; Planning and Forecasting;

Filing Info

• Accession Number: 01744485
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Jun 30 2020 12:22PM