Release Notes 3.1 – May 22, 2026

1 What’s New?

1.1 New Features / Enhancements

1.1.1 Offline Mode

Our products vs | mate and vs | studio now support an offline mode, allowing operation without an internet connection. This enables the applications to be used in isolated offline network environments.
Offline mode can be enabled or disabled at any time via the application settings. When enabled, additional functions become available in the login dialog to create and import license requests. Registrations and password changes are also saved as request files. These files can be sent to us by email from an internet-connected device. We will then generate an offline license with extended validity and send it back for activation in vs | mate or vs | studio.
Please note that certain features are restricted in offline mode, such as links to our online help resources and the integrated support request functionality.

1.1.2 Change Detection for Secondary Instances

vs | studio can be opened multiple times in parallel. This makes it possible to display different intersection versions or multiple datasets of the same intersection version side by side.

Only the first opened instance starts in edit mode, while all additional instances are opened in read-only mode.

Previously, changes made in the editing instance were not automatically transferred to the other instances. In some cases, reopening the application was required to make updates visible.

A change monitoring system has now been integrated. Read-only instances are automatically notified of changes and updated accordingly. If the application is currently displaying the intersection overview, changes are applied and displayed immediately without user interaction. Otherwise, updates are applied no later than when returning to the parameterization main menu or the intersection overview.

1.1.3 Detection of Minimum Required Screen Resolution

Especially on notebooks with smaller displays, Windows display scaling above 100% is often used to improve readability. In such configurations, however, correct rendering of the user interface can no longer always be guaranteed.

Our applications now automatically detect when the Windows display settings may affect proper rendering and display a warning in the information panel on the right side.
In this case, please adjust the Windows display settings for your screen or move the application to another monitor.

1.1.4 Automatic Expansion of the Right Information Panel

To improve the visibility of warnings and errors, a new option has been added to the application settings.
For each information type (errors, warnings, informational messages, and successful actions), users can now individually define whether the information panel should automatically expand.

1.1.5 Enhancements in the Editors

• In the signal group editor, signal sequences can now be copied and pasted between cells using Copy (Ctrl + C) and Paste (Ctrl + V). Both signal sequence and additional patterns are transferred together.
• Additional characters and special symbols are now supported for object names and descriptions (Latin Extended-A, especially for Eastern European languages). Please note that special characters should still not be used in file names and paths (e.g., in OIVD exports), as compatibility with third-party software cannot be guaranteed.
• In the “on demand control” editor, changing sequence pattern lengths could previously result in incorrect display of intergreen violations. This issue has been fixed.

1.1.6 Enhancements in vs | mate

• Similar to vs | studio, vs | mate now includes integrated help functionality in the navigation bar. This allows support requests to be created and sent directly from within the application.

The help function is only available when vs | mate is launched directly by the user, and not when started through PTV VISSIM or vs | studio as part of a simulation.

1.2 Improvements & Bug Fixes

1.2.1 Registration and Password Changes

During registration and password changes, users receive an email containing an activation link. Previously, reopening the same link resulted in a negative response because the activation had already been completed.

This behavior has been improved. The activation link can now be opened multiple times within its validity period and will always return a positive confirmation, even if activation has already been completed. The validity period is 1 day for password changes and 3 days for email verifications.
Previously, emails and confirmation pages were only available in English. These contents are now also available in German. The selected application language during registration determines the language used.

1.2.2 Improvements in vs | studio

• Compatibility with OCIT-I versions has been extended. All OCIT-I versions using structure version number 109 can now be imported. This improves data exchange with controller manufacturers providing OCIT-I exports.
• In the dataset definition editor, datasets of type “Inputs” now require a mandatory reference to the dataset “Parameter PT” if inputs of type “Parameter PT Standard” are present.
• Curve rendering in the topology designer has been improved for tight curves with self-cuts.
• In some editors, modifications could previously be made in read-only mode, although saving was not possible. These cases have been identified and corrected so that editing actions are now fully blocked in read-only mode.
• Previously, only half of the symmetric conflict matrix was considered in the main series editor. All conflicts are now taken into account. As a result, validation errors may occur in existing nodes if invalid minor streams are present. These must be removed accordingly.
• Opening editors with missing required dependencies was previously handled inconsistently. A unified warning is now displayed in the information panel on the right side.
• If an editor containing existing data is opened after its dependencies have been removed, the user is asked whether all data should be deleted. If declined, the user can either return to the main menu to recreate the missing dependencies or manually delete the data.
• Header data display has been standardized and improved across all editors.
• In the test bench, the upper control area can now be collapsed. The most important functions and indicators are then moved into the header bar.
• The test bench now supports a smaller minimum zoom level, allowing a larger portion of the signal timing plan to be displayed.
• A bug was fixed in the test bench where names and signals in the signal timing plan were no longer displayed at the same vertical position under certain circumstances.
• Checksums are now calculated and written correctly during OIVD export.
• A problem was fixed in the search field of the parameterization main menu and the test bench overview where the popup closed too early while scrolling with the mouse before an entry could be selected.
• The ordering of editors in the parameterization main menu has been slightly adjusted and adopted in the same order for reporting.
• In some editors, change detection was not triggered correctly under certain conditions, causing Save and Reset to become unavailable. These cases have been identified and fixed.
• In the “Traffic Stream Connections” editor, the logic for the AMLi entry was inverted: the entry was set when the checkbox was inactive. The display logic has been corrected so that inactive entries are now shown as active and vice versa. This change does not require data migration, as it only affects the user interface.
• In the editors “Required Minor Streams” and “Minor Streams Without Call”, repeated copying and pasting of data rows could result in validation errors. This issue has been fixed.
• The display of mandatory datasets in the parameterization main menu has been corrected. Traffic streams now correctly mark times and flags as mandatory data. If corresponding public transport traffic streams are present, this also applies to the editors “PT-Standard”, “PT-Module”, and “Priorities”. As before, mandatory datasets are indicated by an orange icon in the menu tile if no data is available yet.
• During OIVD export, the unencrypted VCB export is now selected by default if included in the license.

1.2.3 Improvements in vs | mate

• For compatibility reasons, communication between the test bench and vs | mate has been migrated to OCIT-I.This may result in warnings, especially when using serial inputs (detectors). Causes include the 10-character name limitation for serial inputs and the fact that serial and parallel public transport inputs cannot use identical channel numbers.
• These warnings do not affect simulation or test operation and can safely be ignored. To inform users about possible OCIT-I incompatibilities at an early stage, corresponding warnings are now displayed directly in the serial inputs editor. Display of these warnings can be disabled via the display options if required.
• A bug in vs | mate was fixed that previously prevented simultaneous simulation of multiple nodes through PTV VISSIM.

2 Known Issues

2.1 Windows Defender SmartScreen Message When Launching the Installer

After downloading the installer from the website, a Windows security warning from Microsoft Defender SmartScreen may appear when launching the setup for vs | studio or vs | mate.

This behavior is known and can be ignored.

To continue the installation:

1. Click “More info”
2. Then click “Run anyway”

The installation will then continue normally.

Microsoft has tightened Windows security policies in recent years. As a result, SmartScreen warnings like this may appear more frequently for new or less widely distributed installation packages, even when the software itself is trustworthy.