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Network Analysis Enhancements &
Improved Workflow

SIDRA INTERSECTION 8 offers much improved network model processing efficiency and much improved workflow efficiency through substantial enhancements to the user interface including improved visualisation and new output reports and displays. It also incorporates various important model improvements.

Visit and subscribe to our YouTube channel for these and more tutorial videos.

The following is a summary of the new features of SIDRA INTERSECTION 8.

More Powerful and Efficient Processing

Substantial increases are achieved in computing speeds for the iterative network analysis method enabling introduction of facilities for optimum timings as well as demand and sensitivity analysis for networks. Average computing speeds about 5 to 10 times faster than previous versions can be expected in Network analysis.

Increased efficiency of database operations have also been achieved and memory management enhancements have been introduced.

Enhanced User Interface

Significant user interface improvements introduced for ease of use of the software include:

  • graphical displays of Layout, Volumes, Phase Sequence and Movement IDs within most Site input dialogs for assisting the input data entry process and allowing direct in-display data entry;
  • various commands that were hidden in right-click menus in previous versions made available in the Site / Network / Route ribbon or in Site Output sections;
  • right-clicking an output report or display to open the relevant Site / Network / Route input menu and some display commands;
  • double-clicking Site / Network / Route name to open the relevant layout picture;
  • modified processing icon animation according to the new structure for Network model iterations;
  • where Network parameters override Site data, no need to process the Network again if any of the corresponding parameters are changed in Sites that constitute the Network;
  • improved Import Volume Data function;
  • simplified Volume Data Settings for Pedestrians;
  • various improvements in the CCG Phasing & Timing and the Network Data dialogs;
  • cancelling processing of multiple Sites and Networks;
  • option to include or exclude suffixes (Copy, Conversion, Import, Reversed) when Clone, Import, Convert, Reverse functions are used for Sites, Networks, Routes and Sequences;
  • improved Zoom Slider including a dialog to set exact zoom values.

Better Output Reports and Displays

These  have been enhanced significantly. New Site, Network and Route output reports and displays include:

  • Project Summary report using the new Site Category and Network Category parameters;
  • User Report facility based on user-defined report templates;
  • enhanced Input Comparison and Output Comparison facilities using results from different Projects;
  • Lane Changes, Lane Flows, Network Flows and Midblock Flows displays for the whole Network with pop-up boxes showing demand and arrival flows by movement class;
  • Approach Distances display for Networks;
  • Numerical values shown in all Network and Route Displays;
  • Signal Coordination displays in the form of Lane Displays for Sites, Networks and Routes, and Movement Displays for Sites;
  • Route Travel Performance report;
  • Saturation Flows report for signalised Sites;
  • Critical Movements display for signalised Sites with a phase - movement timings bar display and an ARR 123 style critical movement diagram;
  • Movement Timing display for Common Control Groups (CCGs) showing all movements of the CCG together;
  • Gap Acceptance Cycle Parameters included in the Sign Control Analysis and Roundabout Analysis reports.

Significant Network Model Improvements

Important model improvements have been made including:

  • Optimum Cycle Time for Networks;
  • Optimum Cycle Time and Optimum Maximum Green Settings for Common Control Groups;
  • new Phase Time calculation options;
  • improved treatment of Uncoordinated and Unconnected Sites for signal timing calculations;
  • Network Demand and Sensitivity analysis methods for design life, flow scale and parameter sensitivity;
  • Queue at Start of Green and Average Number of Cycles to Depart for signalised Sites;
  • enhanced methods used for stopping conditions in Network and Site model iterations with Network Model Variability Index and Site Model Variability Index parameters given in various output reports and displays;
  • improvements to the iterative method used for Site capacity and timing analyses resulting in fewer cases of unsettled results.

Free Upgrades at the time of a new Version release

Customers with valid COVER at time of release will be given a free upgrade from Version 7 to Version 8. If you have been issued a SIDRA INTERSECTION free upgrade, a new Licence ID number for the new product will be included and is viewable under Order history in your STORE ACCOUNT. This new Licence ID number is required to activate your new free upgrade licence.

Buy Online

SIDRA INTERSECTION 8 is now available for purchase from our online store.

Available in two versions - PLUS & NETWORK - these offer exactly the same functionality, except you can model up to 20 intersections with the NETWORK version. With the PLUS version you can model one or two intersections. 


Learn more about SIDRA INTERSECTION:




VOLUMES is an Excel application for SIDRA INTERSECTION 8 which allows specification of Volumes and related data within the Excel file, and processes a selected Site in a SIDRA INTERSECTION Project using data given in the Project file or in the Excel file, providing Volume Output, Intersection Output, Movement Output, Lane Output and Pedestrian Output data in Excel sheets. This has been developed in conjunction with SIDRA INTERSECTION API to provide additional capabilities for SIDRA INTERSECTION users. 

Visit the VOLUMES page on our support site to download .zip files containing the VOLUMES Excel Utility for SIDRA INTERSECTION 8 and various Sample Project files for use with this application.

Please refer to the SIDRA INTERSECTION User Guide for information on the use of this utility. A video tutorial will be available soon on our YouTube channel.


How to get Support

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Contact the SIDRA Team for all technical support, sales support and general enquiries. You can also read how-to articles, watch videos, and search our Support Site to find the information you need. Sign up to SIDRA Support to view and edit your Tickets all in one place. Our Agents will help answer your questions quickly and efficiently.



Software Updates

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SIDRA INTERSECTION has a facility for automatic download and installation of software updates which requires internet connection. You can find the Latest Version information on our Support Site.


System Requirements

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2 GB RAM or higher
1024x768 or higher resolution monitor.
Font size must not be increased above 100% if 1024x768 resolution is used.
Operating System:
Windows 10, Windows 8.1, Windows 8, Windows 7 with Service Pack (SP) 1 
64-bit only supported.
Internet Explorer Version 8 or later.
SIDRA INTERSECTION will install .NET Framework 4.5 or later version and Microsoft SQL Server Compact 3.5 Service Pack 2. These are prerequisites for installation of the software.

Internet connection for activation of software licence and for software updates. 
The VOLUMES utility (macro-enabled Excel file) requires MS Office 2016 / 2013 / 2010.
FLOATING Licence Server will require:
• Windows Server 2016 / 2012 R2 / 2012 / 2008 R2 / 2008 / 2003, Windows 10 / 8.1 / 8 / 7 and
• an internet connection for licensing transactions.

The Licence Manager for SIDRA INTERSECTION 8 Floating Licencing is a 32-bit program. It can be installed on both 32-bit and 64-bit Operating Systems.


Most widely used software tool in the USA

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According to the US Transportation Research Board document "Roundabout Practices", SIDRA INTERSECTION is the most widely-used software tool in the USA for roundabout capacity and performance analysis, followed by Synchro and HCS, based on a survey of state transportation departments (based on 28 of the 37 state agencies responding to the survey question).

The report also states "To analyze roundabout performance, about three-quarters of the reporting states use some form of the Highway Capacity Manual 2010 model and SIDRA’s Standard Model; about one-quarter use some form of the United Kingdom equations. (Because states were allowed to select more than one operational performance model, there is some overlap.)"

The report "Roundabout Practice, A Synthesis of Highway Practice, National Cooperative Highway Research Program, NCHRP SYNTHESIS 488, TRB, Washington, D.C., 2016" can be downloaded from the National Academies Press (NAP) website.


Recent Testimonials

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"SIDRA INTERSECTION is a very powerful and useful tool for experienced traffic engineers. Its reputation is often tarnished when not used correctly, i.e. when a calibrated base model reflecting current observations is not created. It is user friendly for experienced traffic engineers, especially with reference to the detailed manuals provided. Unfortunately, in large organisations, SIDRA modelling is often assigned to graduates with little knowledge or experience on real life observations and traffic behaviour. The three 'C's to successfull modelling are "Calibrate" "Calibrate" and "Calibrate"."
David Wilkins / i3 consultants WA

"I have used SIDRA in USA, Asia and Australia for 20 years. It has continually improved and over the past six years I have found it extremely useful for analysis of roundabouts in California, Arizona, Oregon and Washington. It is quick and easy to use accurately and my clients respect the results."
Kevin Fehon / DKS Associates

"A great tool to enable students to undertake project work on live intersections as part of the academic syllabus"
Tom Mckune / Durban University of Technology

"I have been using SIDRA for the past 8 years and found all versions are intuitive and the output are very useful and concise for reporting."
Robert Kwok / Worley Parsons

"SIDRA is still our standard for roundabout analysis because of its solid basis in gap acceptance theory that has shown to be more reliable in the USA than empirical models based in other countries."
James Dunlop / NCDOT

"I have found SIDRA INTERSECTION to be a very reliable, versatile and effective tool for analysing intersection performance. The ability to calibrate the model to accurately represent existing intersection characteristics has been of significant benefit for both intersection design and future planning purposes."
Rob Day / RTA (NSW)

Who's using our software?
Read more testimonials
Read the ARCUS GIBB Case Study

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