Digital – Single User
Includes full access to the TripGen12 Web-Based App at itetripgen.org.
ITE Members$925
Non-Members$1,445
Trip Generation: Information
12th Edition / Now Available!
Trip Generation Manual
Estimate development-generated travel.
Single-user digital $925 ITE Members / $1,445 Non-Members
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Print Edition
Printed Version Only – no access to the TripGen12 Web-Based App
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Includes 1 digital license and 1 printed copy for complete flexibility.
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The Office Bundle
5 single user licenses and 1 printed copy
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ITE Members$2,025
Non-Members$3,745
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Purchase information & digital access
The 12th Edition of the Trip Generation Manual is available in both print and digital formats. Your print purchase includes five hard copy volumes (a desk reference + four volumes of data plots) and your digital purchase includes access to the ITE TripGen Web-Based App.
How digital access works
When you purchase the digital 12th Edition of the Trip Generation Manual, you’ll receive a unique license key to activate your access at www.itetripgen.org. Your license unlocks full access to the TripGen12 Web App, including data analysis tools, plots, filtering options, and supporting documentation.
Product Details
The Industry's Go-To Reference for Estimating Development-Generated Travel
The Trip Generation Manual (TGM), 12th Edition, is ITE’s most widely used and trusted resource for forecasting the number and type of trips generated by land development. Whether you’re planning a school, shopping center, warehouse, or mixed-use community, the TGM provides the essential data and tools to help you anticipate travel demand, design infrastructure solutions, and support transportation decisions with confidence.
Backed by more than four decades of empirical data, this flagship manual is a critical tool for transportation professionals across public and private sectors.
What's New in the 12th Edition?
The 12th Edition represents a major update designed to reflect the changing landscape of travel behavior and development. Key enhancements include:
- Over 550 new study sites added across a wide range of land uses.
- Removal of all pre-1990 data for improved relevance and accuracy.
- Nine new land use codes, including boutique fitness studios, travel centers, and high-volume fast-food restaurants.
- Revised land use definitions and updated independent variables.
- Dedicated chapter on emerging trends affecting travel patterns in the post-pandemic era.
- Stronger integration with the Trip Generation Handbook (ITE Recommended Practice).
This edition is more reflective of today’s development realities and provides users with data they can trust for site planning, impact analysis, and long-range forecasting.
Watch the Trip Generation video
Your Digital Advantage: ITETripGen Web-Based App
Access to the ITETripGen web-based app—a powerful platform that puts the entire TGM database at your fingertips—is available for separate purchase and is strongly recommended for users seeking dynamic, on-the-go analysis tools. With intuitive features designed for both analysis and communication, the app allows users to:
- Access a PDF Version of the 11th edition of the TGM as well as a PDF version of the Trip Generation Handbook, 3rd edition
- View all land use codes, plots, and descriptive statistics
- Access to additional modal and truck trip data plots
- Filter the data set based on geographic location, age of data, and development size
- Hover over data points to view the collection year
- Explore modal, person, and truck trip generation plots
- Access pass-by trip data and time-of-day distributions
- Generate and export visual data summaries for reports and presentations
Who Uses the Trip Generation Manual?
- Transportation engineers preparing traffic impact analyses
- Planners and agencies reviewing development proposals or rezoning requests
- Developers designing projects with multimodal access and transportation infrastructure
- Environmental and mobility analysts estimating emissions or mode share
- Academics and researchers studying travel behavior at the site level
The TGM is also widely used in conjunction with travel demand models, parking studies, and local planning efforts.
Why the Trip Generation Manual Matters
- Provides credible, consistent data recognized throughout the transportation industry.
- Supports compliance with local, state, and federal planning requirements.
- Enables better-informed decisions on infrastructure design and policy.
- Facilitates alignment with sustainability, equity, and multimodal goals.
Next Evolution in Transportation Impact Analysis
Now Available! The TripGen API, developed by Transoft Solutions for ITE, allows for third-party transportation engineering software providers to link their products directly to the ITE TripGen app and allows users to extract data needed for analysis.
ITE has initially partnered with PTV Group to offer integration through their software platform, PTV Vistro. The ITE TripGen API allows users to import ITE Trip Generation data for proposed project land uses directly within the software and apply the results in integrated transportation impact analysis workflows.
Through PTV’s Vistro software, users can select the land use characteristics, independent variable and time period. Then, choose to apply the average rate or fitted curve equation and view the results in Vistro’s trip generation table and on the ITE formatted data plot graphics.
Looking for Assistance with Traffic Impact Analysis Studies?
The following members of the ITE Consultants Council are available to perform traffic impact analysis studies. The below organizations operate independently of ITE and ITE does not take responsibility for their performance. Individuals should contact the below organizations directly. The states/provinces that these organizations are licensed in are in parentheses.
- American Structurepoint
- Bunt & Associates (Western Canada)
- CBB Transportation Engineers + Planners (AZ, AR,CO,ID, IL, IN, IA, KS, KY, MI, MN, MS, MO, NE, NV, NC, ND, OH, OK, SC, SD, TN, TX, WI)
- DM Consulting
- DKS Associates (CA, ID, MT, OR, TX, WA)
- Eveline Transport Planning
- Fehr & Peers (AK, AZ, CA, CO, DC, FL, HI, ID, IA, MD, MA, NE, NV, OR, PA, TN, TX, UT, VA, WA, WI, WY)
- GFT (Gannett Fleming | TranSystems) (CA, DC, FL, IL, IA, KS, MA, MD, MO, ME, NE, NJ, NY, NC, OH, PA, SC, TX, VA, WV and Ontario, Canada)
- GHD
- Kimley-Horn (Kimley-Horn and Associates, Inc., with its affiliated companies, is licensed in all 50 states, the District of Columbia, Puerto Rico, the U.S. Virgin Islands, Barbados, and some Canadian provinces.)
- Lee Engineering (AZ, NM, OK, TX)
- Mana Engineering (TX)
- Michael Baker International
- Olsson (Olsson, Inc. with its affiliated companies, is licensed in all 50 states.)
- Paradigm Transportation Solutions Ltd. (Canada, primarily Ontario)
- Pennoni (DC, DE, FL, MD, NJ, OH, PA, RI, VA, WV)
- RS&H
- Sanbell (Western US)
- Stantec (All states EXCEPT: AR, HI, ID, MO, MT, NE, UT)
- STV
- Synapse ITS
- Tsquared Traffic & Transportation
- The Traffic Group, Inc. (AR, AZ, DC, DE, FL, GA, IL, MD, NC, ND, OH, OK, PA, SC, TN, VA, WV)
- TPD, Inc.
- TYLin
- via planning, inc.
- Y2K Engineering
Interested in adding your organization to this list? Contact Kathi Driggs to learn more about joining the ITE Private Sector Council.
Other Trip Generation Resources
In addition to the ITE Trip Generation Manual, we also provide access to several other related resources such as articles, related research and white papers as follows:
- Articles
- High-Cube Warehouse Vehicle Trip Generation Analysis
Prepared for South Coast Air Quality Management District and National Association of Industrial and Office Properties
Prepared by Institute of Transportation Engineers - Urban and Person Trip Generation White Paper
- Related Research
- 11th Edition Errata
Want to Learn More?
- Read about the Trip Generation Handbook, a recommended practice for using the data
- Submit new trip data to ITE and help improve future editions
- Learn more about the Parking Generation Manual