DynusT applies the widely accepted dynamic user equilibrium (DUE) definition as discussed in the US Transportation Research Board (TRB) published DTA Primer. This primer was authored by the TRB ADB30 Transportation Network Modeling Committee task group led by Professor Yi-Chang Chiu. The Dynamic User Equilibrium (DUE) seeks to establish equal experienced travel times for vehicles departing at the same time between the same O-D pair taking different routes. The major innovat
The general flow of converting an existing model using shapefiles DynuStudio uses shapefiles as the primary interfacing method with other existing GIS based transportation software packages. The shapefile format is the industry standard that contains nodes, links, points, geometrical features and attributes of the network. DynuStudio can easily read such data files and create the DynusT format in a matter of hours.
The Metropia team prepared various training materials and tech support methods to assist users in learning DynusT/DynuStudio. These materials include: Printed user guide In-program help Website resources Web meetings Real time messaging Video tutorials Onsite training Below is an example of one of our online video tutorials:
DynusT has an extensive history integrating with activity-based models (ABM) such as CT-RAMP and DAYSIM. Two recently completed C10 projects in 2017 funded by US FHWA are to integrate with CT-RAMP for both Atlanta Regional Council (ARC) and Ohio Department of Transportation. To integrate with ABM, DynusT is able to load trip rosters and time-vary OD matrices for external freight trips and airport trips. Up to 11 user classes are also created to reflect various tolling/pricing
History of DynusT 1995-2002 – Professor Chiu was the graduate student developer of DYNASMART-P under Prof. Mahmassani, gained solid DTA theoretical DTA foundation at University of Texas at Austin. 2002 - Professor Chiu obtained his doctoral degree and started to revamp algorithmic and computational architecture and sim logic. 2006 – DynusT name was copyrighted by the Arizona Board of Regent (ABOR), and declared as Open Source. 2017 – DynusT was declared by ABOR as the proprie
DynusT can support up to 10 user classes, providing users with substantial flexibility to handle a wide range of scenarios pertaining to physical properties, road pricing, turning restriction, road accessibility, and more, by vehicle type. Performance measures such as travel time, travel speed, vehicle miles traveled, and delay time can be reported and visualized separately for each user class. Here is an example from a recent Metropia project: User Class 1 reflects SOVs not