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
• 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.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:deee702ccfba29bce8b63959c0875bb4ba40c3fde3158eb959cc9d6822c41b27
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/30949/dot_30949_DS1.pdf
• File Type:
  [PDF - 38.88 MB ]