SIDRA INTERSECTION 6 now features a unique lane-based micro-analytical model for network analysis incorporating all types of intersection. This version introduces the biggest changes in the 30-year history of the software. Three major elements of change are the Network Model, Movement Classes and Origin-Destination Movements as a basis of all data and modelling.
Lane disciplines (exclusive and shared lane arrangements) and all movement data are specified, and all lane flow calculations, capacity and performance estimation and signal timing calculations are carried out by Origin – Destination movements and Movement Classes.
Click on the above playlist to watch video tutorials for SIDRA INTERSECTION 6. Visit and subscribe to our YouTube channel for these and more tutorial videos.
SIDRA INTERSECTION 6 employs a lane-based network model allowing all intersection types - signals, roundabouts, sign control in one network. Backward Spread of Congestion (queue spillback) resulting in capacity reduction at upstream lanes, and Capacity Constraint reducing the demand volumes of downstream lanes as a result of oversaturated upstream lanes are powerful features of this model.
Lane Movements are used to model blockage of upstream lanes depending on lane choices of movements from approach lanes to exit lanes. Upstream and downstream lane flows and mid-block lane changes determine platooning on an approach.
Networks are easy to configure using SIDRA INTERSECTION Sites.
Light vehicles, heavy vehicles, buses, bicycles, large trucks, light rail/trams as well as two user classes - with different vehicle characteristics - can be allocated to different lanes, lane segments and signal phases. This provides a unique method for modelling of Bus Priority Lanes, Bicycle Lanes, and so on.
Data and modelling by Origin-Destination (OD) Movements allow improved handling of movements at intersections with diagonal legs and U turns.
Two-segment lanes (with different Movement Classes allocated to individual segments), contra-flow lanes, strip islands, high-angle and low-angle slip / bypass lanes allow more flexible and powerful lane geometry specification.
The new two-way sign control method adjusts gap acceptance parameters automatically for intersection geometry and control, with option to apply reduction with opposing flow rate. The new model of opposing stream headways includes the effect of unequal lane use of opposing (major) stream lanes on minor stream capacities. A new parameter Percent Opposed by Nearest Lane Only is used for specifying conditions where some traffic gives way (yields) to the nearest opposing (major road) traffic lane.
The two-way sign-control model includes the effect of pedestrians on vehicle movements.
Demand and sensitivity analysis results can now be obtained and the Graphs facility used for a selected lane, approach or origin-destination movement (by Movement Class) in addition to intersection level analysis.
Extensive new model calibration parameters are provided including fuel consumption and emission model parameters updated for modern vehicles.
SIDRA INTERSECTION is the most advanced software for roundabouts and this new version includes many new powerful model features:
Roundabout corridors can be analysed in detail using the new network model.
Circulating lane flows: improved model of unequal circulating lane flow rates for bunching calculations, and circulating lane flow rates given in the Detailed Output report.
"Set as Dominant Lane" for user control of how the dominant and subdominant lanes are determined.
"Include Slip/Bypass Lane in Entry Lane Count" for user control of how slip / bypass lanes are handled.
"Percent Opposed by Nearest Lane Only" for specifying conditions where some traffic gives way (yields) to the nearest circulating lane or exiting lane.
Origin-Destination Factor: model improved to make allowance for lane flow balance of lanes on the dominant approach.
HCM 2010 roundabout capacity model: improved calibration method introduced.
A good understanding of traffic operations at intersections is essential for effective use of traffic models for intersection design and traffic planning purposes. Model calibration is an important element of this process. Our SIDRA INTERSECTION workshops are not just about intersection analysis, but aim to improve general understanding of operational analysis of all traffic facilities.
We have representatives who run training workshops in other countries. They are supported by Akcelik & Associates for providing up to date training programs. See our list of Representatives
Available in two versions:
SI-6 PLUS | FOR ONE OR TWO INTERSECTIONS
SI-6 NETWORK | FOR UP TO 20 INTERSECTIONS
We are offering special pricing to upgrade from your existing SIDRA INTERSECTION 6 PLUS/1PC licence to a NETWORK/1PC licence. To upgrade your licence at any time visit our PURCHASE UPGRADE page.
SI-6 NETWORK UPGRADE will allow you to create and edit Networks up to 20 Sites.
Professional Version 1PC (Per Unit) - 1,450 AUD
Educational Version 1PC (Per Unit) - 250 AUD
PLUS & NETWORK version of the software offer exactly the same functionality, except you can model up to 20 intersections with the NETWORK version. PLUS version you can model one or two intersections.
You may wish to contact us to discuss your options.
IMPORTANT INFORMATION ABOUT COVER: Do not renew your PLUS/1PC COVER if you are about to purchase a NETWORK UPGRADE. The new licence will include FREE 12 month COVER - your new COVER Renewal date will be 12 months from date of purchase of the NETWORK UPGRADE licence. Your PLUS/1PC licence and remaining COVER will be cancelled.