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EMFAC2025 Technical Documentation
Executive Summary
Executive Summary
Contents
1. Introduction
2. New Features
2.1. Light-Duty Vehicles of Age 45 Years and Older
2.2. High-Speed Driving
2.3. Light Heavy-Duty Trucks Split to Public and Other Categories
3. Fleet Characterization Updates
3.1. Light-Duty Fleet Characterization
3.2. Heavy-Duty Fleet Characterization
3.3. Transit Bus
3.4. Natural Gas Vehicles
3.5. Heavy-Duty Vehicle Miles Traveled Reallocation
4. Updates on Vehicle Population and Vehicle Miles Traveled Forecasting
4.1. Vehicle Mileage Accrual Update
4.2. Retention Rate Update
4.3. Vehicle Start Adjustment
4.4. Light-Duty VMT and New Vehicle Sales Forecasting
4.5. Zero-Emissions Vehicle Regional Allocation
4.6. Heavy-Duty Retention Rates, New Sales, and VMT Forecasting
5. Heavy-Duty Emission Rate Update
5.1. Diesel Heavy Heavy-Duty Vehicles
5.2. Updates to Medium Heavy-Duty Emission Rates
5.3. N
2
O Emissions Update
5.4. Natural Gas Heavy-Duty Vehicles
6. Light-Duty Emission Rate Update
6.1. Base Emission Rates
6.2. Carbon Dioxide (CO
2
) Base Emission Rate Update
6.3. Light-Duty Speed Correction Factor Update
6.4. Tire Wear Emission Rate Update
7. Fuel Properties
7.1. Reid Vapor Pressure Update
7.2. Fuel Sulfur Content Update
7.3. Fuel Mix Update for Greenhouse Gas Emissions
8. Electric Vehicle Energy Consumption
8.1. Battery-Electric Vehicles and Plug-in Hybrid Vehicles
8.2. Fuel Cell Electric Vehicles
9. Incorporated Regulations
9.1. Clean Truck Check
9.2. Advanced Clean Fleets
9.3. Federal Clean Trucks Plan
10. Overall Impacts
Appendices
Acronyms and Terms
EMFAC Vehicle Categories
EMFAC Geographical Areas
EMFAC2025 Version Updates
Bibliography
Bibliography
Index
Index
Electric Vehicle Energy Consumption
8.
Electric Vehicle Energy Consumption
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