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News

SIDRA INTERSECTION 11.0.3 out now

27 Jul 2026 · News · 4 min read

SIDRA INTERSECTION 11 NOW AVAILABLE

Version 11.0.3 Now Available
Build 11.0.3.112, released 27 July 2026

SIDRA INTERSECTION 11.0.3 is now available. This maintenance release brings 11 enhancements and 23 bug fixes across the SIDRA Network model, SIDRA ASSIGN, licensing and the user interface.

SIDRA INTERSECTION 11.0.3 is now available, with 11 enhancements across the SIDRA Network model, SIDRA ASSIGN and the user interface. Important modelling improvements include the Two-Loop Convergence Method that delivers better convergence for many Network cases, and refinements to the calculation and reporting of Travel Time and Delay elements including idling delay, acceleration - deceleration delay and geometric delay.

Version 11.0.3 adds significant workflow improvements to SIDRA ASSIGN, including O-D Volumes Dialog with Percent HV option, a Quick Input function, faster Copy and Paste functions for O-D Volume Matrix, new controls for removing Zone Connectors, as well as improvements to the ASSIGN Diagnostics report and SIDRA ASSIGN User Guide.

Enhancements

What Has Improved

Network Model

  • Significant improvements to Network Model convergence methods, particularly the Two-Loop Method, to achieve better and faster convergence for many Network cases.
  • Improvements to the calculation and reporting of Travel Time and Delay elements including idling delay, acceleration-deceleration delay and geometric delay.
  • Improvements to Network Layout Display.

SIDRA ASSIGN

Improvements in the O-D Volumes Dialog (Volume Store, Assign Volumes):

  • Improved usage when the Total and % option is used.
  • Volume Data Method dropdown list included.
  • An additional Trip table to allow input or display of total volume for All Movement Classes according to the Volume Data method used.
  • Column O-D Mode improved for entering O-D data by Movement Class.
  • Improved speed of the dialog when there are several Movement Classes and many Zones.
  • Quick Input function added.
  • Improved Copy and Paste functions for the O-D Volume Matrix.
  • Improved display for All Movement Classes when Growth Rates vary by Movement Class.
  • New functions in the Add and Modify Assign dialogs for removing Zone Connectors from Zones and Sites, and for removing all Zone Connectors.
  • Improved SIDRA ASSIGN diagnostics for some input errors and for Fixed Route Assignment Only cases.

Licensing

  • An option added for administrators to disallow checking out licences, to prevent misuse of the Offline Licence feature.

Interface and workflow

  • Text in the TWSC Calibration Table now changes automatically to be specific to the current Drive Rule, avoiding user confusion.
  • For some input changes that do not require reprocessing, the program no longer removes the outputs.
  • Many minor enhancements to the User Interface.

Documentation

  • Significant improvements to the SIDRA INTERSECTION User Guide, the SIDRA ASSIGN User Guide and Help.

Bug Fixes

23 Fixes in This Release

Grouped by area. The full list is also published on SIDRA DOCS.

Signal timing and capacity
  • Fixed a problem that caused Saturation Flow values to be allocated to the wrong green periods for some unsignalised Slip Lanes at signalised Sites.
  • Green periods were not correctly identified in some unusual unsignalised Slip Lane cases at signalised Sites.
  • Fixed some processing errors related to effective green time calculations.
  • Error messages related to signal phasing specification did not refer to the correct phase in some unusual cases.
  • In some cases, individual Site results changed if the Site was processed following processing of a Network.
Output and displays
  • Some units in table headers in the Detailed Output were not correctly showing US units when the US Customary setup was used.
  • SIDRA Classic Format Movement Displays for Delay and Degree of Saturation were not showing the correct output values.
  • Fixed a problem with number alignment for wide approach roads in the Lane Changes, Lane Flows and Lane Utilisation Network Displays.
  • For the Overall Method of Pedestrian Volume data, differences between Sites were not being reported in Input Comparison.
SIDRA ASSIGN
  • The Move Up and Move Down buttons were not working correctly in the Assign Bin Setup dialog, Zone Data Editor tab.
  • Fixed a User Interface error that occurred when cloning an ASSIGN Volume Bin.
  • Fixed an error that occurred when trying to create a Trip Matrix report in Destination-Origin format.
  • Fixed incorrect reporting of the Duality Gap value in ASSIGN Diagnostics when the Incremental Assignment and All Or Nothing methods were used.
  • Fixed updating of ASSIGN Layouts when changes are made to Site geometry.
Licensing and installation
  • Fixed a problem that prevented installation of the software when there was no internet connection.
  • Fixed a case where an Offline Licence stopped working when there was no internet connection.
  • Fixed refreshing of Offline Licences when the licence was changed.
  • Fixed a case where the SIDRA ASSIGN function was not available with an Offline Licence.
  • Fixed a licensing problem related to API access when a subscription licence was in use.
SIDRA API, utilities and general
  • Fixed a problem with API access to Movement Class data that indicated some unused Movement Classes were present.
  • Timeout limits increased to avoid processing timeout errors when processing a large number of Sites or Networks using the SIDRA BATCH PROCESSOR Utility.
  • Fixed a User Interface error that occurred in Network Configuration for right-hand driving setups.
  • Fixed a User Interface error that sometimes occurred when opening very large project files.

How to Update

From within the softwareSelect Check for Updates on the FILE Tab. The software will identify the more recent version and ask you whether to apply the update.
For IT departmentsDownload the setup file for the latest version from your STORE Account and run it. The current version does not need to be uninstalled.
Still on Version 11.0.1?Automatic updating did not work in Version 11.0.1 and was fixed in Version 11.0.2. If you are still on 11.0.1, download the setup file from your STORE Account and install it manually.

Full Release Notes

Read the Version 11 Update History

Every enhancement and bug fix in Version 11.0.3, alongside the complete update history for SIDRA INTERSECTION 11, is published on SIDRA DOCS.

View Updates →