• Air Toxics
• CMAQ
• Conformity
• It All Adds Up

• Laws and Regulations
• Maps
• Policy and Guidance
• Research
  • General Practice
  • Air Quality Planning and SIPs
  • Emissions Analysis
  • Land Use
  • Multi-Jurisdictional (Complex) Areas
  • Project Level Conformity
  • Small Urban and Rural Areas
  • Tools & Methodologies
  • Transportation Control Measures
• Resources
• Models & Methodologies
• Training

Improving Vehicle Fleet, Activity, and Emissions Data for On-Road Mobile Sources Emissions Inventories

Table Of Contents

1. Introduction
   • 1.1 Background
   • 1.2 Current Practices, Trends, and Future Needs
     • 1.2.1 Vehicle Fleet Data
     • 1.2.2 Vehicle Activity Data
     • 1.2.3 Vehicle Emission Data
   • 1.3 Objectives of the Research
   • 1.4 Organization of the Report
2. Current State of the Practice
   • Background
   • Summary of Findings
     • South Coast, CA
     • San Joaquin Valley, CA
     • New York Metro, NY
     • Maricopa County, AZ
     • Denver Metro, CO
   • Concluding Remarks
3. Vehicle Fleet Data
   • Background
   • Method for Collecting Local Vehicle Fleet Data
     • Vehicle Information Extraction
     • Validation of VIN Decoder Accuracy
   • Case Study: Impact of Out-of-State Vehicles on Local Vehicle Fleet Characteristics
     • Data Collection
     • Data Processing and Analysis
     • Results and Discussion
   • Concluding remarks
4. Heavy-Duty Truck Activity Data
   • Background
   • Truck Electronic Control Unit Data
     • Example Dataset
     • Data Processing and Analysis
     • Results and Discussion
   • Truck Telematics Data
     • Example Dataset
     • Data Processing and Analysis
     • Results and Discussion
   • Truck Activity Data Fusion
     • Data Sources and Characteristics
     • Data Fusion Method
     • Numerical Example
     • Results and Discussion
   • Concluding remarks
     • Truck ECU Data
     • Truck Telematics Data
     • Truck Data Fusion
5. Heavy-Duty Truck Emissions Data
   • Background
   • Truck Emission Testing
     • Test Equipment and Facilities
     • Truck Selection and Recruitment
     • Test Procedures
   • Results and Discussion
     • Effect of Weight on Emission Rates
     • Comparison with MOVES Emission Rates
   • Concluding remarks
6. References
7. Appendix A: Sample Vehicle and Engine Characteristics.
8. Appendix B: Guidance on Conducting License Plate Survey.
9. Appendix C: Results of Vehicle License Plate Surveys.
10. Appendix D: Results of Truck Telematics Data Analysis.
11. Appendix E: MOVES Driving Cycles for Single-Unit and Combination Trucks.