Resources

Trip and Parking Generation

Trip Generation Manual, 11th Edition (TripGen11)

The ITE Trip Generation Manual presents a summary of the trip generation data that have been voluntarily collected and submitted to ITE.  The trip generation database includes both vehicle and person trip generation for urban, suburban and rural settings. A Trip Generation web app—ITETripGen allows electronic access to the entire dataset with numerous filtering capabilities including site setting, geographic location, age of data, development size, and trip type. As additional data become available, they will be distributed through periodic updates to the Trip Generation Manual.

Submit Data for ITE's Trip Generation Manual

Do you have trip generation data that you would like to see included in ITE's Trip Generation Manual? To submit data, go here https://www.itedatasubmission.org/index.html. If you have any questions about submitting data, email lfontana@ite.org. Hard copy submittals are also accepted using ITE’s standard trip generation data collection form.

Purchase the Trip Generation Manual, 11th Edition

This new edition of the Trip Generation Manual enhances the 10th edition’s modernized content, data set, and contemporary delivery - making it an invaluable resource.

The 11th edition features:

  • All the latest multimodal trip generation data for urban, suburban and rural applications,
  • Reclassified land uses to better meet user needs,
  • Integrated digital copies of all land use definitions, plots and supporting materials,
  • Full ability to filter the data to match local conditions (in digital versions only)

**When you purchase the 11th Edition and use your new code to update from the 10th Edition to the 11th Edition, the ITETripGen web app will enable data analysis, filter, and calculate functions for only the 11th Edition database. You will still be able to access PDFs for the entire 10th Edition and entire 10th Edition Supplement contents through the Support Documents button within the ITE TripGen11 Web-based App.

For every license purchased, you will receive a unique key code, to create one, single user account at www.itetripgen.org  This is where you will go to access all TripGen11’s data, plots, create plots of your own, and access reference documents. Everything you need is on www.itetripgen.org.

Available in Multiple Formats at the Same Price 

  • Digital – A single TripGen11 user license providing electronic access to all plots, descriptions and references and the ability to filter the data to match local conditions. 
  • Hard Copy - A full-printed version of the 11th edition plots and descriptions.

All-in-one-Bundle - A single TripGen11 User License and 11th Edition Hard Copy are available at a discounted price of $1,290 members | $1,890 non-members (+ shipping and handling): Purchase the All-in-one-Bundle

Significant Discounts for Multi-Users

Additional TripGen11 user license - $395 members | $495 non-members

For members purchasing 3 or more single user licenses, it’s most cost effective to purchase the Five-pack or the Office Bundle

Questions or interest in purchasing more than 5 licenses? Email membership@ite.org.

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.

Interested in adding your organization to this list? Contact Kathi Driggs to learn more about joining the ITE Consultants Council.

Next Evolution in Transportation Impact Analysis

Now Available! The TripGen11 API, developed by Transoft Solutions for ITE, allows for third-party transportation engineering software providers to link their products directly to the ITE TripGen 11 app and gives 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 TripGen11 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.

Information about purchase the Trip Generation Manual, 11th Edition to gain access to TripGen11 App is below. To learn more about PTV’s Vistro, click here. If you are interested in partnering with ITE on API integration, contact Kevin Hooper.

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:

Parking Generation Manual, 5th Edition

The Parking Generation Manual, 5th Edition is an educational tool for transportation professionals, zoning boards and others who are interested in estimating parking demand of a proposed development.  The Parking Generation Manual includes a complete set of searchable electronic files and a database that includes land use descriptions and data pots for all available combinations of land uses, time periods, independent variables and settings.

This manual follows the lead of the modernized, updated, and expanded Trip Generation Manual, 11th Edition. The analyses in Parking Generation Manual will differentiate the levels of parking demand observed at rural, general urban/suburban, dense multi-use urban, and center city core sites.

The Parking Generation web app—ITEParkGen allows electronic access to the entire dataset with numerous filtering capabilities including site setting, geographic location, age of data, and development size.

The information included in this resource is based on parking generation studies submitted voluntarily to ITE by public agencies, developers, consulting firms, student chapters and associations.  The Parking Generation Manual 5th Edition is the current edition, but work is currently underway on the 6th Edition that is expected to be available by mid-October 2023.

Call for Parking Generation Data

ITE has initiated the process of developing the 6th Edition of its widely used informational report, Parking Generation Manual for release in October 2023.

To produce this valuable reference, ITE relies heavily on the voluntary submittal of data from the transportation community. We need your help to continue to improve the value of this resource.

If you have conducted parking demand counts, we strongly urge you to consider submitting the data for inclusion in the 6th Edition. We will accept data for any land use in all settings, even those not included in Parking Generation Manual, 5th Edition or Trip Generation Manual, 11th Edition. Data that may include pre- and post-pandemic counts for the same site would be particularly helpful in assisting ITE in understanding the impacts COVID-19 has had on parking demand.

Please click here to view the full call for data.

Submit Data for ITE’s Parking Generation Manual

Do you have parking generation data that you would like to see included in ITE's Parking Generation Manual? To submit data, go here Submit Parking Data. If you have any questions about submitting data, email lfontana@ite.org. 

Purchase the Parking Generation Manual, 5th Edition

There are 2 options for the Parking Generation Manual, 5th Edition.

Option #1: Parking Generation Manual, 5th Edition: Printed Copy, Electronic, & App

If you purchase this option, you will receive a printed version, pdf version, and access to the web application. Please note that the PDF version of Parking Generation Manual is a single user digitally rights managed (DRM) publication. 

Pricing: $345 (ITE member); $495 (non member). Discounts are available for purchases of 6 or more. Contact membership@ite.org for more information.

The pdf version and the web application will be delivered the day of purchase, for purchases made by 5:00 p.m. ET.

Option #2:  Parking Generation Manual, 5th Edition: All-Electronic (PDF + App)  

If you purchase this option, you will receive a pdf version and access to the web application. Please note that the PDF version of Parking Generation Manual is a single user digitally rights managed (DRM) publication. 

The pdf version and the web application will be delivered the day of purchase, for purchases made by 5:00 p.m. ET.

Pricing:$245 (ITE member); $395 (non member). Discounts are available for purchases of 6 or more. Contact Frances Bettis for more information.

Questions? Contact Frances Bettis at 202-785-0060 x149 or fbettis@ite.org. 

Other Parking Generation Resources

In addition to the ITE Trip Generation Manual, we also provide access to several other related resources such as articles, FAQs, and a guide for use as follows:

Featured Resources


Parking Generation, 5th Edition - All Electronic (PDF + App)

This updated manual follows the lead of the modernized, updated, and expanded Trip Generation Manual, 10th Edition. The analyses in more..



Parking Generation, 5th Edition - Printed Copy, Electronic, & App

This updated manual follows the lead of the modernized, updated, and expanded Trip Generation Manual, 10th Edition. The analyses in more..



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