Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Office of Planning, Environment, & Realty (HEP)
PlanningEnvironmentReal Estate

HEP Events Guidance Publications Awards Contacts

Handbook for Estimating Transportation Greenhouse Gases for Integration into the Planning Process

FHWA-HEP-13-026

Continue to Contents

PDF files can be viewed with the Acrobat® Reader®

Quality Assurance Statement

The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.

Technical Report Documentation

1. Report No.
FHWA-HEP-13-026

2. Government Accession No.

3. Recipient's Catalog No.

4. Title and Subtitle

Handbook for Estimating Transportation Greenhouse Gases for Integration into the Planning Process

5. Report Date
July 2, 2013

6. Performing Organization Code

7. Authors
Michael Grant (ICF), William Seth Hartley (ICF), Ron Milam (Fehr & Peers), Jerry Walters (Fehr & Peers), Laurence O'Rourke (ICF), Jennifer Brickett (ICF), Sonya Suter (ICF)

8. Performing Organization Report
No.

9. Performing Organization Name and Address
ICF International, Inc.
9300 Lee Highway
Fairfax, VA 22031

Fehr & Peers
100 Pringle Avenue, Ste. 600
Walnut Creek, CA 94596

10. Work Unit No. (TRAIS)

11. Contract or Grant No.
DTFH61-10-D-00006

12. Sponsoring Agency Name and Address
United States Department of Transportation
Federal Highway Administration
1200 New Jersey Ave. SE
Washington, DC 20590

13. Type of Report and Period
Covered
June 2011 - December 2012

14. Sponsoring Agency Code
HEPP

15. Supplementary Notes
Ms. Jody McCullough, Federal Highway Administration, COTM
Ms. Diane Turchetta, Federal Highway Administration

16. Abstract
This publication is a handbook designed to provide information on how to analyze on-road greenhouse gas emissions at the state and regional level, and how to incorporate those analyses into transportation planning efforts. The handbook is intended to help State DOTs and MPOs understand the possible approaches, data sources, and step-by-step procedures for analyzing GHG emissions. It provides an overview of estimating GHG emissions in the planning process, and identifies and describes several key methodologies used to estimate emissions. It also provides a discussion of the strengths and weaknesses of each methodology, and includes a section designed to help users identify which methodology is best for their situation.

17. Key Words
Transportation planning, greenhouse gases, emissions, inventory, forecasting, modeling, vehicle miles traveled, fuels, analysis methods, State DOT, metropolitan planning organization

18. Distribution Statement
No restrictions. This document is available to the public from the National Technical Information Service, Springfield, VA 22161.

19. Security Classif. (of this report)
Unclassified

20. Security Classif. (of this page)
Unclassified

21. No. of Pages
120

22. Price
N/A

Form DOT F 1700.7 (8-72)

Reproduction of completed page authorized.

Acknowledgements

This Handbook was developed with the assistance of practitioners from a range of agencies that were convened as a Greenhouse Gas Assessment in Transportation Team (GGATT) to provide input to the development of this document. Their input received during several peer exchanges and an in-person meeting was invaluable in shaping the Handbook. We would like to thank the following individuals who were part of the GGATT:

In addition, we would like to thank the many other staff from State DOTs and MPOs who also provided input to this document through discussions during a peer exchange and webinar that were held in November 2011 and March 2012.

Acronym & Definitions List

AADT - Annual Average Daily Traffic
ABAG - Association of Bay Area Governments
APTA - American Public Transportation Association
ARC - Atlanta Regional Commission
BAAQMD - Bay Area Air Quality Management District
BAU - Business as Usual
BCDC - Bay Conservation and Development Commission
BEA - Bureau of Economic Analysis
CAA - Clean Air Act
CAFE - Corporate Average Fuel Economy
CDTC - Capital District Transportation Committee
CH4 - Methane
CNG - Compressed Natural Gas
CO2 - Carbon Dioxide
DMV - Department of Motor Vehicles
DOE - Department of Energy
DOT - Department of Transportation
DTA - Dynamic Traffic Assignment
DVRPC - Delaware Valley Regional Planning Commission
EERPAT - Energy and Emissions Reduction Policy Analysis Tool
EIA - Energy Information Administration
EIIP - Emission Inventory Improvement Program
EISA - Energy Independence and Security Act
EMFAC - Emission Factors model (California)
EPA - Environmental Protection Agency
EV - Electric Vehicle
FHWA - Federal Highway Administration
FLEET - Freight Logistics Environmental and Energy Tracking model
FTD - Fischer-Tropsch Diesel
GAO - Government Accountability Office
GBNRTC - Greater Buffalo Niagara Regional Transportation Council
GGATT - Greenhouse Gas Assessment in Transportation Team
GHG - Greenhouse Gas
GIS - Geographic Information Systems
GPS - Global Positioning System
GREET - Greenhouse Gases, Regulated Emissions, and Energy use in Transportation model
HBO - Home-based Other
HBW - Home-based Work
HCM - Highway Capacity Manual
HCS - Highway Capacity Software
HFCs - Hydrofluorocarbons
HHDV - Highest Class of Heavy Duty Vehicle
HPMS - Highway Performance Monitoring System
IDAS - ITS Deployment Analysis System
I&M - Inspection and Maintenance
ICM - Integrated Corridor Management
ITE - Institute of Transportation Engineers
ITS - Intelligent Transportation System
kWh - Kilowatt Hours
LACMTA - Los Angeles County Metropolitan Transportation Authority
LCA - Lifecycle Analysis
Local level - county or municipal level
LNG - Liquefied Natural Gas
LPG - Liquefied Petroleum Gas
LRP - Long Range Plan
LRT - Light-rail Transit
LRTP - Long Range Transportation Plan
MAP-21 - Moving Ahead for Progress in the 21st Century
MDOT - Maryland Department of Transportation
MMBtu - Million Metric British thermal units
MOVES - Motor Vehicle Emissions Simulator
MOVES - RREGGAE - MOVES-Roadway and Rail Energy and Greenhouse Gas Analysis Extension
MPO - Metropolitan Planning Organization
MTC - Metropolitan Transportation Commission
MVSTAFF - Motor Vehicle Stock, Travel, and Fuel Forecast model
MWCOG - Metropolitan Washington Council of Governments
N2O - Nitrous Oxide
NEPA - National Environmental Policy Act
NHB - Non-home Based
NHTS - National Household Travel Survey
NPS - National Park Service
NYSDOT - New York State Department of Transportation
O/D - Origin/Destination
PEL - Planning and Environment Linkages
PHEV - Plug-in Hybrid Electric Vehicle
PTW - Pump to Wheel
SB - Senate Bill
SCAG - Southern California Association of Governments
SCRITS - Screening for ITS model
SHA - Maryland State Highway Administration
SIPT - State Inventory Projection Tool
SIT - State Inventory Tool
STAPPA/ALAPCO - State and Territorial Air Pollution Program Administrators/Association of Local Air Pollution Control Officials
STIP - State Transportation Improvement Program
STS - Statewide Transportation Strategy
TDM - Transportation Demand Management
TEAM - Travel Efficiency Assessment Method
TERMs - Transportation Emission Reduction Measures
TIP - Transportation Improvement Program
TPB - National Capital Region Transportation Planning Board
TRIMMS - Trip Reduction Impacts of Mobility Management Strategies model
TSM - Transportation System Management
USC - United States Code
V/C - Volume to Capacity Ratio
VHT - Vehicle Hours Traveled
VIN - Vehicle Identification Number
VIUS - Vehicle Inventory and Use Survey
VMT - Vehicle Miles Traveled
VTDEC - Vermont Department of Environmental Conservation
VTrans - Vermont Department of Transportation
WSDOT - Washington State Department of Transportation
WTP - Well to Pump
WTW - Well to Wheel

Continue to Contents

Updated: 07/23/2014
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000