The Definitive Software for Modern Roundabout Planning and Design Take the creation of single and multilane roundabouts to another level of productivity with full control and feedback during the roundabout design process. Designing optimal roundabouts that meet traffic operations and safety objectives has never been easier. Revolution in design for exceptional engineering Powered by the trusted AutoTURN® engine, TORUS® uses the Vehicle Envelope Method® (U.S. Patent No. 8,650,004) of design to generate roundabout geometry with vehicle swept paths. This innovative approach allows for real-time, interactive designing and dynamically updates any changes made to the entire roundabout layout. Engineers with all levels of roundabout design experience will find TORUS invaluable for projects throughout the feasibility, preliminary, and planning stages.