Comprehensive Solution for Roundabout Design & AnalysisTORUS® delivers a complete set of tools for roundabout design at its core. From automated initial geometry to built-in checks for design efficiency, compliance, and integrated traffic capacity analysis with SIDRA INTERSECTION, TORUS provides a solid foundation for your roundabout projects.
Designed for all skill levels, TORUS makes your job easier and more efficient by balancing geometry, safety and performance , while showing how your design choices impact traffic operations.TORUS generates roundabout geometries from vehicle swept path movements. This innovative approach reduces trial-and-error, eliminates tedious calculations, and reduces iteration cycles, so you can focus on engineering design rather than manual rework.
With seamless SIDRA INTERSECTION integration, you can import project files, add traffic volumes, and view capacity analysis without switching tools. Generate clear reports and export back to SIDRA INTERSECTION for detailed refinements. This integrated approach eliminates errors from manual transfers, accelerates approvals, and gives you the confidence to make data-driven decisions that deliver better, safer roundabout designs.
Generate RoundaboutGenerate your roundabout geometry based on your design vehicle right from the start.TORUS generates the initial geometry using the vehicle swept path method – This method minimizes complicated iteration cycles in the design process by providing immediate dimensional and analytical guidance for the ICD, central island diameters, vehicle movements and clearance offsets.
Design a Variety of RoundaboutsEfficiently design circular and non-circular roundabouts – Elliptical, teardrop, dog-bone, peanut, one lane or multi-lane, to address special constraints such as right of way, utilities and other infrastructure.Design a turbo roundabout, with its key geometric elements that provides a spiraling flow of traffic, requiring drivers to choose their direction before entering the roundabout.
Outer and Custom Truck ApronProvide additional traversable area around the central island apron and around the outside entry and exit lanes to allow larger vehicles room to navigate your roundabout without striking fixed objects or other road users.
3D Modeling and GradingCreate a 3D model quickly to ensure that the design intent is confirmed early in the design process by incorporating terrain elevation and the swept paths with its vehicle clearance data together in the project drawing. Issues not anticipated when designing in a 2D plane are now detected and can be resolved using a 3D space, therefore preventing costly damage to vehicles and the roundabout.
Visualize the Impact With AssembliesDesign your complex projects with easy 3D modeling and visualizations, and add assemblies to your roundabout (shoulder, boulevard, sidewalk, curb and gutter). TORUS’ new functionality easily stitches together components such as curbs, truck aprons, sidewalks, splitter islands to generate a realistic 3D roundabout model.
Advanced 3D Grading and Terrain ModelingGo further with your road design by generating a 3D grading and terrain model to view profiles, super elevation and more. Tie the 3D model back into your existing terrain with ease to see how your design fits with the existing infrastructure and submit your completed design for construction.
Comprehensive Design and Editing FunctionsWith its complete set of design and editing tools, you can easily drag and place elements while dynamically updating the design. Simply add and set leg parameters such as entries/exits, offsets, widths, bypass lanes, and curb rounding. Torus updates automatically any analysis already performed.
Modify Various Elements of Your GeometryEdit elements of your splitter islands like radii, offsets and more. Extent Splitter islands to facilitate movements in multi-lane designs by directing vehicles into the appropriate circulating roadway lanes. With the Refined Edge tool, draw lines and arcs, which can be fine-tuned to closely represent the final edges of your roundabout.
Crosswalk and Pedestrian RefugeIntroduce pedestrian refuge space to make your design safer for vulnerable road users. Make your roundabout safer and more inclusive by easily placing a crosswalk, adjusting its width and angle in just a few clicks. Align your crosswalk with the edge of the road and change the offset from the yield line to your crosswalk.
Sight Line Controls and Visibilities EvaluationTo promote driver safety and generate various sight lines that check the angle of visibility or sightlines- approaches to crosswalks, yield lines, circulatory lanes, and more to ensure your design allows enough time and distance for drivers to react to obstacles.
Path-overlap Analysis for Multi-lane RoundaboutsWith TORUS it is easy to simulate vehicle movements within the roundabout by analyzing and displaying the vehicle path overlap. Using TORUS’ Path Overlap Analysis, it detects and analyzes if the natural paths of vehicles in adjacent lanes may overlap. This feature gives you the necessary feedback to highlight this type of vehicle conflict for multi-lane roundabout design.
Roundabout Reporting TablesCreate and insert Summary Reports with all design information into the CAD drawing or export it to csv or text format files. Create and insert the Fastest Path Analysis, Curve Tables, Turning Movement Reports and Summary Reports with all design information to finish your design.
Fastest Path Results and Curve TableFastest Path Results Table contains radius and speed data on the roundabout. Curve Table consists of a curve table and a line table for the data on the roundabout’s refined edges.
Design ManagerReduce your iteration cycle and use the Design Manager to create, track and explore more roundabout design options. TORUS allows you to save, recall, and display multiple roundabout iterations for review and comparison.