The Trip Generation and Analysis Software for a new era

OTISS®Pro (for Online Traffic Impact Study Software), developed by Transoft Solutions in cooperation with the Institute of Transportation Engineers (ITE), is an add-on tool for the ITETripGen web application. OTISS Pro allows you to perform advanced Graph Look Up Operations and Traffic Impact Analysis (TIA) using your own or ITE’s trip generation data.

Purchased and accessed through the ITETripGen, OTISS Pro enables you to share information and work collaboratively with your team online. OTISS Pro features data from over 5,500 studies included in the 8th and 9th Edition ITE Trip Generation Manual as well as new data from the 10th edition.



Chet Skwarcan, President of Traffic Engineering Inc., has worked on traffic impact and trip generation studies for clients across the Midwest since the late 1990s. When OTISS was developed, Skwarcan knew it could help him.

What's New in OTISS Pro
Come learn about all the new features in the latest OTISS release. New additions include person and multi-modal trip generation, network analysis and automatic trip distribution and assignment provide even greater functionality.
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OTISS Features

Create a Trip Generation Summary
View the Trip Generation Summary directly in OTISS PRO or summarize all the scenarios of a project into a spreadsheet report.
Evaluate Reductions: Internal Capture, Pass-By, And Diverted Trips
Determine the actual traffic impact of a site development by consider the reductions based on the ITE Recommended Practice (3rd Edition Handbook/NCHRP 684)
Study Different Time Periods or Project Phases
Create multiple scenarios to study a project involving different time periods, development phases, options and export the findings into a report.
Estimate Trips for Developments with Mixed Land Uses
OTISS Pro extends the capabilities of ITETripGen from a simple trip rates look-up tool to estimating trips from developments with single or mixed land uses.

What Our Clients are Saying

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Platform Compatibility

Supported Browsers
Subscription to ITETripGen Web-based App required
Microsoft® Internet Explorer® version 9 and up
Google® Chrome® version 19 and up
Mozilla® Firefox® version 13 and up
Apple® Safari® version 5.1 and up
System Requirements
Full support for 32 and 64-bit operating systems
Workstation: Windows® XP, Vista, Windows® 7, Windows® 8
Languages Available