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New in TSIS-CORSIM 2025

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Highway Capacity Software 2023

The reliable software tool that faithfully implements the methodologies from the Highway Capacity Manual

New ETFOMM Microsimulation for TSIS-CORSIM

ETFOMM (Enhanced Transportation Flow Open-Source Microscopic Model) is a traffic simulation engine now incorporated within TSIS-CORSIM. Developed as part of an FHWA-funded project (Publication No. FHWA-HRT-17-028), this model offers expanded capabilities over the traditional CORSIM model, providing new modeling features.

Type of Network	Engine	Description
Roundabout	EFTOMM	ETFOMM introduces the new ‘Add Roundabout’ feature, allowing users to quickly input exit turning percentages in TSIS through a simple, streamlined process. This feature is also available in CORSIM, though it requires an additional step to complete the design.
Road Geometry Design	EFTOMM	ETFOMM provides users with flexibility in designing road geometry, allowing up to five turn pockets per side of each roadway segment, as well as adjustable turn pocket lengths.
Toll Plazas / HOT lanes	CORSIM	CORSIM models toll pricing features, enabling users to assess the impact of toll plazas and potential congestion resulting from these configurations.
Parking Simulation	CORSIM	CORSIM includes a detailed curb parking feature to assess the impact of parking maneuvers within the simulation.
Car following model	EFTOMM	ETFOMM incorporates a variety of car-following models within its engine, enabling it to replicate diverse driver behavior effectively.
Traffic Assignment with OD Data	CORSIM	CORSIM offers the flexibility to use either turning movement assignments or a built-in traffic assignment tool based on OD matrices.

Easily Create Roundabouts with the Add Roundabout tool

The new “Add Roundabout” tool in Map View allows for creation of a simulation-ready roundabout without having to add additional links or nodes.

Redesigned NETSIM Traffic Assignment Inputs

The NETSIM Traffic Assignment feature from TSIS 6.3 has been reintroduced for TSIS-CORSIM 2025 and features a redesigned O-D trip table, making it easier to input origin-to-destination volume for larger files.

New TSIS-CORSIM Console with Formatted Simulation Processing

The new TSIS-CORSIM console features improved color and formatting, making it easier to see the results of your CORSIM or ETFOMM microsimulations. Now, when you run a .trf file, the output is generated into the console directly rather than through a windows command prompt.

Enhanced Sorting Logic in the Text Editor

The text editor now includes enhanced sorting logic to improve usability and efficiency. This upgrade simplifies the process of identifying and modifying specific simulation Record Types, assisting users in managing large and complex networks.

Sorting Methodology: Rows in the text editor are now sorted in a hierarchical manner. This structured approach to sorting allows users to quickly locate specific links or nodes within the simulation data, reducing the time spent searching for and editing entries. The enhancements aim to provide users with a more intuitive and efficient simulation experience.

Enhanced Sorting Logic in the Text Editor

Rows in the text editor are now sorted in a hierarchical manner, beginning with the Record Type (last column, orange), followed by the Link Upstream Node (first column, red), and concluding with the Link Downstream Node (second column, cyan)

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Adds ETFOMM simulation as an alternative modeling tool to CORSIM
Adds a new “Add Roundabout” tool to Map View that supports both CORSIM and ETFOMM
Adds a new simulation window for ETFOMM and CORSIM

Adds traffic assignment for street-level analysis
Adds a dedicated console for viewing in-progress messages of ETFOMM and CORSIM
Adds a new option to simulate different random seeds every simulation run

Adds automatic sorting of record types by node number in the .trf file
Improves automatic turning movement assignment
Fixes a crash that occurs when using multiple time periods for freeway analysis

To view the full version release history, click here.

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