DDOT MXD+ Method Development Report

Mixed-use development has become increasingly common across the country, including Washington, D.C. However, a straightforward and empirically validated method for evaluating the traffic impacts of such projects is still needed. The Mixed-Use Development (MXD+) method, initially developed for the United States Environmental Protection Agency (EPA) and Institute of Traffic Engineers (ITE), accounts for the degree to which mixed-use sites internally capture travel and the extent to which smart growth site design and context result in walking, biking, and transit use. The EPA MXD+ method represents a dramatic improvement over current methods of estimating trip generation for mixed-use developments. The method produces reliable, though still somewhat conservative, estimates of trip generation that are highly sensitive to the context of any given development. The District of Columbia Department of Transportation (DDOT) has long recognized the deficiencies with traditional approaches and has conducted a number of studies to better understand traffic and parking generation characteristics of the highly urban District. These methods, while significantly better than using national data, still lack sufficient sensitivity to the context of developments (that is, where it would be placed and what would surround it). This study applies the EPA MXD+ method to sites within The District. Based on those initial results, the EPA MXD+ method is then calibrated to better match District conditions. The resulting DDOT MXD+ method is then operationalized into an easy to use spreadsheet tool for use by DDOT staff in project development review.

  • Corporate Authors:

    District Department of Transportation

    55 M Street, SE, Suite 500
    Washington, DC  United States  20003

    CH2M Hill


    Fehr & Peers DC

  • Authors:
    • Henson, Jamie
    • Westrom, Ryan
    • Chamberlain, Anna
    • Rogers, Jonathan
    • Dock, Stephanie
    • Kilim, Giri
    • Paradkar, Raj
    • Ridgway, Matthew
    • Bottigheimer, Nat
    • Watten, Mackenzie
    • Bakhru, Anjuli
    • Ziebarth, Jennifer
    • Kao, Michael
  • Publication Date: 2015-9


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Maps; Photos; References; Tables;
  • Pagination: 104p

Subject/Index Terms

Filing Info

  • Accession Number: 01608579
  • Record Type: Publication
  • Created Date: Jul 18 2016 1:17PM