Modeling Soak-Time Distribution of Trips for Mobile Source Emissions Forecasting: Techniques and Applications

Details

• Creators:
  Nair, Harikesh S. ; Bhat, Chandra R.
• Corporate Creators:
  University of Texas at Austin. Center for Transportation Research
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Transfer Section
• Subject/TRT Terms:
  • Computer models
  • Exhaust gases
  • Forecasting
  • Travel surveys
  • Demographics
  • Land use
  • Metropolitan areas
  • Mobile source emissions
  • Soak time
  • Vehicle trip starts
  More +
• Publication/ Report Number:
  FHWA/TX-0-1838-6
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Research Report (9/99-5/00)
• Corporate Publisher:
  University of Texas at Austin. Center for Transportation Research
• Abstract:
  The soak-time of vehicle trip starts is defined as the duration of time in which the vehicle's engine is not operating and that precedes a successful vehicle start. The temporal distribution of the soak-time in an area is an important determinant of area-wide mobile source emissions. In the current paper, we formulate and implement a methodology for modeling soak-time durations. The methodology involves estimation of models using vehicle trip data from household travel surveys and supplementary zonal demographic/land-use data. The effectiveness of the methodology lies in its easy application at the traffic zonal level within a metropolitan region to obtain zone-specific soak-time distributions by time-of-day and origin activity purpose. The methodology is applied to estimate soak-time duration models for the Dallas-Fort Worth area of Texas.
• Format:
  PDF
• Funding:
  0-1838
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/14839/dot_14839_DS1.pdf
• File Type:
  [PDF - 275.91 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:20e8c5c11aae99fc0543a04e55856696f190c10710cf2c41c552a986bf56093e