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Version 9.1

All updates to SIDRA INTERSECTION 9.1, starting with the most recent release.

Previous Version

SIDRA INTERSECTION 9.1 is a previous version. Technical support is provided for the current version only. For best results and ongoing support, we recommend upgrading to the latest SIDRA INTERSECTION release.

Version 9.1.6.126

Release Date: 22 February 2024

This is the last release of SIDRA INTERSECTION 9.1.

Enhancements
  • The Floating Licence system has been updated to a newer version. Compatibility with the latest web browsers including Microsoft Edge, Google Chrome, Firefox and Safari has been improved.
  • Improvements to User Guide and Help.
Bug Fixes
  • Extra Bunching was not being applied correctly to some entries at roundabout Sites in Network analysis.
  • Fixed a case where incorrect Green Split values for the Movement Timing Display for Roundabout Metering were reported.
  • Copy-Paste of a Roundabout Metering Site was not copying the metering signals correctly.
  • Fixed a bug causing a program error when an extra Network was imported into a project.
  • Fixed a bug that could cause an error during file import when using "Import (Merge)" from the File menu.
  • Delay values reported in the Pedestrian Analysis reports were not correct in some cases.
  • Fixed a problem with the way that Extra Bunching was reported in the Report (Site Platoon Data) for some cases.
  • The Lane Change Volume was not being reported correctly in the Site Input Report.
  • Fixed several bugs related to the User Report Template feature.
  • Fixed a bug where the Bus Midblock Volume appeared as editable in Volume Bins for a Basic Freeway Segment Site when it should not have been.

Version 9.1.5.121

Release Date: 14 June 2023

Enhancements
  • Improvements to User Guide and Help.
Bug Fixes
  • Corrected errors related to the calculation of Degree of Saturation for Signal Coordination in the cases of some shared lanes.
  • Fixed errors related to the calculation of Average Approach Phase Times for Signal Coordination.
  • Fixed a bug related to the order of presentation of back of queue data for Roundabout Metering.
  • Fixed a bug related to inconsistent display of Roundabout Metering signal timing in some Reports and Displays.
  • Fixed the Network Configuration dialog so a Site can be rotated to any angle.
  • The Network Composite Movement Level of Service display was showing wrong information for Roundabout Sites. This has been fixed.
  • An error that occurred when a Network (currently selected in the Network list) was deleted via the Edit > Delete Network function has been fixed.
  • Fixed a bug with selection of a User Report Template for the Site Input Report when using the right-click menu.
  • The Queue column of the Worst Movement and Worst Approach Data in the Project Summary report was blank. This has been fixed.
  • Fixed bugs related to User Report Template and User Report Categories.
  • In some cases, the phase list in the Pedestrian dialog showed duplicated phases. This was a display issue only and did not affect any results.
  • When using the Format Toolbar to format text in a Site Note, an error occurred. This has been fixed.

Version 9.1.4.116

Release Date: 13 February 2023

Enhancements
  • The embedded browser component used for Floating Licensing has been updated.
  • If Floating Licence authentication via a Proxy Server is required, it can now be done via NTLM (Windows Authentication) instead of only Basic Authentication.
  • Improvements to User Guide and Help.
Bug Fixes
  • In some cases, queue calculation resulted in very large and incorrect values for certain roundabout Sites. This was due to a problem with Queue Move-up Rate calculations. This has been fixed.
  • Extra Bunching value changes at roundabout approaches due to upstream signals now follow a more gradual trend with increasing distance.
  • Fixed a problem related to calculation of Extra Bunching at roundabout approaches due to an upstream signalised intersection at short spacing.
  • Incorrect value of Degree of Saturation was calculated for a roundabout approach with no demand (zero) flow rate for all movements on the approach while the approach had Extra Bunching. This has been fixed.
  • Fixed some cases where the Phase Frequency parameter was not being correctly considered in signal timing analysis.
  • Fixed the effect of "Ignore Short Lane" on the Roundabout Capacity parameter.
  • Fixed some incorrect rounding in the Way Capacity and Lane Capacity parameters for roundabout approaches.
  • Previously, for cases with Short Lanes on the approach controlled by metering signals, Short Lane Capacity was calculated using the approach roundabout capacity rather than the Short Lane Capacity for Metering Signals. This has been fixed.
  • Fixed a case where overflow queue for a short lane was not included in queue reporting.
  • The correct model calibration parameter (the Lane Utilisation Ratio for SIDRA Standard model) was not used for metered lane capacity calculations. This has been fixed.
  • In some cases, the program encountered an error when a slip lane or bypass lane had zero traffic demand. This has been fixed.
  • Fixed a case where incorrect Signal Coordination Lane Capacity values were reported.
  • Fixed a display error related to the Format Text Font dialog used with Site Note.

Version 9.1.3.108

Release Date: 23 September 2022

Enhancements
  • An important enhancement to the Floating Licence system has been implemented. The login process now opens the Floating Licence login page in the user's default web browser instead of inside the application. This supports user identification (authentication) through Single Sign-On (SSO) integration with an Identity Provider (e.g., Microsoft Entra ID, formerly known as Azure AD). Previously, SSO (if configured) opened in an embedded browser within the application.
  • When the Proxy Server Authentication dialog appears, users now have the option to save their Proxy Server credentials. If saved, the credentials will be applied automatically when the dialog is next shown, and the user only needs to confirm.
  • User Report Template and User Report Category features have been improved. Templates created in an earlier software version no longer cause a program error when the software is updated.
  • Improvements to User Guide and Help.
Bug Fixes
  • Average delay values reported for the Approach in the case of Roundabout Metering were not correct. This has been fixed.
  • Previously, if Extra Bunching was applied at a roundabout entry, and the entry had a Short Lane, the Short Lane was not using the correct entry capacity. This has been fixed.
  • Fixed a problem related to the Move-Up Rate used for queue calculation when the demand flow rate is zero.
  • Fixed a case where the Overflow Queue for a Short Lane at a roundabout entry was calculated as a negative value.
  • Corrected the Green Time value for Give-Way Controlling Movement in the Roundabout Metering Report. This was a reporting issue that did not affect any calculations.
  • The Queue Distance Display now shows separate short lane and continuous lane queues in the case of Roundabout Metering.
  • Fixed errors in the Queue Display for some cases of Roundabout Metering.
  • Network Route Travel Time results are now reported for Roundabout Metering Sites.
  • Fixed an error with Network processing that resulted in zero platoon ratio at roundabout approaches with Midblock Signals upstream.
  • Fixed a problem related to the selection of Route ID in the Network Configuration dialog.
  • Fixed a problem with sorting in some output tables (Sites, Networks) of the Project Summary when there are more than 9 Sites.
  • The output table for the Way (Entry) parameters was not displaying values correctly in some cases where a movement in the dominant lane on a roundabout approach had zero volume. This was a display issue only and did not affect any results. This has been fixed.
  • Version 9.0 Project files that contained Network Phasing could not be opened in Version 9.1. This has been fixed.
  • Fixed a problem that occurred when the Windows Display Scale was set to 350%.
  • Fixed a problem that occurred with an empty Notes panel.
  • Fixed a case where the Gap Acceptance dialog could not be opened for a Stop (TWSC) Site when Signal Coordination was set up for the Site.
  • The Copy Approach function was not copying lane disciplines for the origin approach correctly. This has been fixed.
  • Some dialog boxes did not display correctly if the user had set up a non-standard font size or non-standard font type in Windows Display settings. This has been fixed.

Version 9.1.2.101

Release Date: 29 March 2022

Enhancements
  • The Roundabout Metering model has been extended to allow for multiple metered lanes.
  • A new Roundabout Metering Report with comprehensive information about the metering signals is now available.
  • Improvements to various dialogs.
  • Improvements to User Guide and Help.
Bug Fixes
  • Fixed a problem related to the Move-Up Rate used for queue calculation at Roundabout Metering sites. The queue estimation method for Roundabout Metering is described in the User Guide.
  • The metering effect on other approaches was not always correctly calculated for Roundabout Metering sites in a Network. This has been fixed.
  • Fixed some errors in the Roundabout Metering queue displays.
  • Corrections to Signal Coordination in some Network cases where the subject Site had variable phasing and the upstream Site was a roundabout.
  • Fixed errors related to display of results for some Special Movement Classes.
  • Fixed a problem with opening of project files created by previous releases.
  • Fixed an error that occurred with some Site types when Volumes were exported.

Version 9.1.1.95

Release Date: 14 October 2021

Bug Fixes
  • A bug related to saving a file was causing changes to a Project not to be saved in some cases. This has been fixed.
  • Fixed a problem related to Route Time-Distance Display for Routes that include a Roundabout Metering site.
  • Fixed a problem where the Route selector in the Time-Distance Display was not showing all available Routes.
  • Fixed a case where the Time-Distance Display did not show information for some Routes.
  • The site icon in the Network Composite Movement Display for a Roundabout Metering site appeared incorrectly. This has been fixed.
  • Fixed some problems related to opening project files from Version 9.0.
  • Fixes related to some Displays and Reports for Roundabout Metering.
  • Corrections to some Network Signal Coordination cases with short lanes at signalised Sites.
  • Fixed a problem with Site and Network Scenarios. The Timing Strategy option in the Signals dialog is now available for changing in the Scenarios.

Version 9.1.0.91

Release Date: 22 July 2021

This is the first release of SIDRA INTERSECTION 9.1.