TripGen is a simple, user-friendly tool that calculates trip generation based on Version 10 of the Institution of Transportation Engineer’s Trip Generation Manual. Users can select the desired independent variable and calculate driveway volumes by using the rates or equations found in the Trip Generation Manual. Pass-by trips and internal capture trips for mixed-use developments (NCHRP 684) can also be taken into account. The software allows users to enter custom trip rates based on local or regional studies. TripGen offers several reports for users to quickly review calculations. The resulting volumes can then be imported into Synchro’s TIA module for analysis and optimization within Synchro and SimTraffi c.