Development and Evaluation of Simplified Version of MOVES for Coupling with Traffic Simulation Model

The MOtor Vehicle Emission Simulator (MOVES) released in 2009 by the U.S. Environmental Protection Agency is an empirically based modal model capable of estimating project level on road vehicle emission rates for a wide variety of driving cycles. Many researchers and practitioners are attempting to combined MOVES with travel demand models (TDMs) and traffic simulation models (TSMs) for the purpose of estimating emissions impacts of possible future changes in road infrastructure, vehicle mix, traffic control measures, and other factors. However, MOVES is a computationally intensive model, and direct dynamic coupling of MOVES to a TDM or TSM can be impractical. To facilitate the capability to estimate link-based emission factors based on second-by-second vehicle speed trajectories, a simplified version of MOVES is demonstrated here. A Speed Correction Factor (SCF) is generated for a selected vehicle type and driving cycle based on distribution of time spent in each of 23 operating mode bins. Operating modes are defined by the instantaneous speed and Vehicle Specific Power (VSP). The emission factors estimated by the simplified model are demonstrated to be sensitive to differences between driving cycles with similar average speeds. The errors of the simplified model cycle average predictions are within ±1% for 92% of the cases among pollutants, ages, and driving cycles, for passenger cars, passenger trucks, light commercial trucks, single unit short haul trucks, and combination long haul trucks. The application of the simplified model is demonstrated based on empirical driving cycles observed from field measurements.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ADC20 Transportation and Air Quality.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Frey, H Christopher
  • Liu, Bin
• Conference:
  • Transportation Research Board 92nd Annual Meeting
  • Location: Washington DC, United States
  • Date: 2013-1-13 to 2013-1-17
• Date: 2013

Language

• English

Media Info

• Media Type: Digital/other
• Features: References; Tables;
• Pagination: 19p
• Monograph Title: TRB 92nd Annual Meeting Compendium of Papers

Subject/Index Terms

• TRT Terms: Exhaust gases; Pollutants; Traffic simulation; Travel demand; Vehicle mix
• Identifier Terms: Motor Vehicle Emission Simulator (MOVES)
• Subject Areas: Highways; Planning and Forecasting; I15: Environment; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01474100
• Record Type: Publication
• Report/Paper Numbers: 13-1201
• Files: TRIS, TRB, ATRI
• Created Date: Feb 28 2013 9:03AM