DDOT MXD+ method development report.

Details

• Creators:
  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
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• Corporate Creators:
  CH2M Hill, inc. ; District of Columbia. Dept. of Transportation ; Fehr & Peers
• Subject/TRT Terms:
  • Calibration
  • Evaluation and assessment
  • Mixed use development
  • Parking
  • Spreadsheets
  • Traffic congestion
  • Trip generation
  • Urban areas
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington (District of Columbia) ; United States
• Corporate Publisher:
  District of Columbia. Dept. of Transportation
• Abstract:
  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 data presented in the Institute of Traffic Engineers (ITE) Trip Generation ; informational report is primarily collected at suburban, single-use, and free-standing sites. This defining ; characteristic limits the applicability of these basic trip rates to mixed-use or multi-use development ; projects. While the number of person trips generated by individual uses may be similar to free-standing ; sites, the potential for interaction among on-site activities can significantly reduce the total number of ; vehicle trips. Additionally, mixed-use projects located in areas with a variety of nearby destinations and ; high quality transit access will produce fewer vehicle trips due to a larger share of trips entering and ; exiting the site on foot, bicycle, or by transit. ; The Mixed-Use Development (MXD+) method, initially developed for the United States Environmental ; Protection Agency (EPA) and 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.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30949/dot_30949_DS1.pdf
• File Type:
  [PDF - 38.88 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:deee702ccfba29bce8b63959c0875bb4ba40c3fde3158eb959cc9d6822c41b27