Forecasting Traffic Characteristics for Air Quality Analyses [Interim Report]

Details

• Creators:
  Yu, Lei ; Qiao, Fengxiang ; Li, Guangchun ; Wang, Xin
• Corporate Creators:
  Texas Southern University. Dept. of Transportation Studies
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Air Quality Emission Control Systems Exhaust Gases Forecasting Linear Programming Nonlinear Equations Time Series Analysis Vehicle Miles Of Travel Vehicle Mix
• Publication/ Report Number:
  TX-02/4142-8
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Texas
• Edition:
  Interim Report 9/1/00-8/31/01
• Corporate Publisher:
  Texas. Department of Transportation
• Abstract:
  This research intends to develop techniques for estimating and forecasting three critical mobile source emission related travel indicators: vehicle age distribution, mileage accumulation rates by vehicle type, and VMT mix. As for modeling the vehicle age distribution, two model types were used; each of which contains the linear model, nonlinear model and time series model. Age distributions for the 8 counties in HGAC area in Texas were used for validating model structures and parameters. The differences between the emission factors generated by MOBILE based on the default values and the forecasted values were compared. The developed computer program can be used in the Texas cities. As for modeling the mileage accumulation rate, a correcting process was developed. The real mileage accumulation rates by some vehicle types in Houston were collected, the correcting factor and estimated mileage accumulation rates were generated. As for VMT mix, extensive efforts were made on collecting information on VMT mix estimation. A national-wide survey through e-mail was conducted to ascertain what kinds of methodologies were being used by the other states. The evaluations of VMT mix estimation methodologies and the proposed improvements are on-going works, which will be summarized in the final report.
• Format:
  PDF
• Funding:
  0-4142
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8cd77a4080155b824bc0233754790c7c6a7e66b6446db6ec8cf5ff9ef4d431bc4dc6bcc608008f53242891cb7fe59d36d38f9107d4bf34aeaa54456120896d34
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/87335/dot_87335_DS1.pdf
• File Type:
  [PDF - 5.13 MB ]