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Question 1. Which unit systems can be configured in TORUS? A) Metric only B) US Customary only C) Both Metric and US Customary D) Imperial only Answer: C Explanation: TORUS allows users to select either metric or US customary units, or switch between them. Question 2. What file format does TORUS use to import a CAD drawing for roundabout design? A) .dwg B) .pdf C) .jpg D) .txt Answer: A Explanation: TORUS accepts AutoCAD .dwg files for direct integration. Question 3. Which regional design guideline is NOT available in TORUS? A) NCHRP Report 672 B) TAC 2017 C) Austroads D) AASHTO 2025 Answer: D Explanation: TORUS includes NCHRP, TAC, and Austroads standards but does not yet contain a 2025 AASHTO guideline.
Question 4. In the Vehicle Library, which engine provides the design vehicle sweeps? A) VISSIM B) AutoTURN® C) Synchro D) VISSIM Answer: B Explanation: TORUS integrates the AutoTURN® engine for swept‑path analysis. Question 5. How can a user create a custom design guideline in TORUS? A) Edit an existing guideline and rename it B) Write a VBA script C) Import a CSV file only D) Use the “Create New” button in the guideline manager Answer: D Explanation: The “Create New” function lets users define user‑defined parameters. Question 6. What does ICD stand for in roundabout geometry? A) Internal Circle Diameter B) Inscribed Circle Diameter C) Intersection Center Distance D) Initial Curve Dimension Answer: B Explanation: ICD is the Inscribed Circle Diameter, the core of the roundabout layout. Question 7. Which element defines the outer boundary of a roundabout’s circulatory lane?
B) Truck aprons C) Narrower lane widths D) Larger central island Answer: B Explanation: Truck aprons provide extra mounting space for large vehicles. Question 11. Which roundabout type uses a spiral lane to separate entering and circulating traffic? A) Turbo roundabout B) Mini roundabout C) Dog‑bone roundabout D) Signalized roundabout Answer: A Explanation: Turbo roundabouts employ a Dutch‑style spiral lane. Question 12. Adaptive roundabouts are best applied to which geometry? A) Perfect circles only B) Non‑circular shapes such as ovals or peanuts C) Square intersections D) Straight roadways Answer: B Explanation: Adaptive designs handle ovals, peanuts, or “dog‑bone” shapes. Question 13. High‑speed entries are primarily designed for which environment? A) Urban downtowns B) Rural highways
C) Pedestrian zones D) Bicycle paths Answer: B Explanation: Rural or high‑speed approaches need specialized geometry. Question 14. What does the $R_1$ radius represent in TORUS analysis? A) The smallest turn radius for a passenger car B) The largest turn radius for a truck C) The median island radius D) The entry lane width Answer: A Explanation: $R_1$ is the fastest (tightest) path radius for a design vehicle. Question 15. Which safety analysis evaluates the “Angle of Visibility” for entering drivers? A) Path Overlap Detection B Sight Line Analysis C) Fastest Path Evaluation D) Vehicle Movement Simulation Answer: B Explanation: Sight Line Analysis checks visibility angles for entry. Question 16. Path overlap detection primarily aims to prevent which crash type? A) Head‑on collisions B) Side‑swipe crashes C) Pedestrian impacts
Answer: C Explanation: TORUS does not control traffic signal timing in Civil 3D. Question 20. SIDRA INTERSECTION integration within TORUS is used to import what data? A Soils data B Traffic volume and capacity C Weather patterns D Construction schedules Answer: B Explanation: SIDRA provides traffic volume and capacity data. Question 21. Which report summarizes the iterative changes made during design? A Area Estimation Report B Iteration Summary Report C Design Check Report D Project Charter Answer: B Explanation: The Iteration Summary logs each design revision. Question 22. For a roundabout with a central island radius of 30 m, what is the approximate ICD? A 60 m B 90 m C 120 m D 150 m Answer: B
Explanation: ICD ≈ 3 × central island radius (30 m × 3 = 90 m). Question 23. Which design parameter controls the width of entry lanes? A Leg offset B Approach width C Entry lane width setting D Central island radius Answer: C Explanation: Entry lane width is set directly in the lane configuration. Question 24. In a turbo roundabout, how are lane changes restricted? A Through raised barriers on the spiral lane B By painted arrows only C By speed limit signs D By traffic lights Answer: A Explanation: Physical barriers guide vehicles along the spiral path. Question 25. Which factor is NOT considered when evaluating speed consistency across $R_1$‑$R_5$? A Vehicle length B Design speed limit C Entry curvature D Road surface friction Answer: A
Question 29. Which of the following is a key benefit of non‑circular roundabout designs? A Reduced construction cost only B Better fit within constrained right‑of‑way C Elimination of all conflicts D Simplified signage Answer: B Explanation: Non‑circular shapes adapt to limited site geometry. Question 30. In TORUS, what does the “Check Vehicle” represent? A The smallest vehicle that must be accommodated B The most restrictive vehicle for safety checks C A hypothetical vehicle for theoretical analysis D A pedestrian model Answer: B Explanation: The Check Vehicle is the most restrictive (largest) vehicle used for verification. Question 31. Which analysis tool identifies natural path conflicts in multi‑lane roundabouts? A Fastest Path Evaluation B Path Overlap Detection C Sight Line Analysis D Vehicle Movement Simulation Answer: B Explanation: Path Overlap Detection finds overlapping swept paths.
Question 32. What is the default unit for measuring radii in TORUS when set to US Customary? A Meters B Feet C Yards D Inches Answer: B Explanation: US Customary defaults to feet for radius measurements. Question 33. Which design element is automatically generated when a truck apron is defined? A Elevated bridge deck B Mountable curb geometry C Pedestrian walkway D Bicycle lane buffer Answer: B Explanation: The apron creates a mountable curb envelope. Question 34. When performing a sight line analysis, which feature must be clear for the “Angle of Visibility” to be acceptable? A Central island vegetation B Approach lane markings C Yield line and crosswalk D Storm drain grates Answer: C Explanation: Yield lines and crosswalks must be visible to entering drivers.
A Fastest Path Speed Consistency B Path Overlap Ratio C Truck Apron Width D Central Island Area Answer: A Explanation: Fastest Path evaluation checks entry speeds against limits. Question 39. What is the purpose of a “Design Guideline Display” in TORUS? A To visualize selected design standards on the drawing B To export guidelines to PDF only C To lock the drawing from editing D To change the CAD background color Answer: A Explanation: The display overlays the chosen guideline parameters. Question 40. Which element defines the inner boundary of a roundabout’s circulatory lane? A Central island radius B Truck apron width C Entry lane offset D Sight line buffer Answer: A Explanation: The central island sets the inner edge of circulation. Question 41. When importing a traffic volume file, which format is accepted by TORUS? A .xlsx
B .csv C .pdf D .docx Answer: B Explanation: TORUS reads CSV files for traffic data. Question 42. Which analysis tool would you use to verify that a design vehicle can clear the outer curb? A Sight Line Analysis B Vehicle Movement Simulation C Fastest Path Evaluation D Path Overlap Detection Answer: B Explanation: Simulation tests clearance of the outer curb. Question 43. In TORUS, the “Iterative Design” workflow primarily helps to: A Reduce file size B Automate cost estimation C Refine geometry based on analysis feedback D Create 3D renderings only Answer: C Explanation: Iterative design updates geometry after each analysis loop. Question 44. Which of the following is a key characteristic of a “Turbo” roundabout compared to a conventional one? A Single‑lane circulatory
B Lane count setting C ICD size D Vehicle library selection Answer: B Explanation: The lane count setting directly sets circulatory lane numbers. Question 48. Which safety analysis specifically checks for “natural path conflicts” in multi‑lane designs? A Fastest Path Evaluation B Path Overlap Detection C Vehicle Movement Simulation D Sight Line Analysis Answer: B Explanation: Path Overlap Detection finds natural conflicts. Question 49. Which design vehicle is typically used for checking pedestrian‑friendly roundabouts? A Passenger car B Bicycle C Pedestrian simulation vehicle D Truck Answer: C Explanation: TORUS includes a pedestrian check vehicle for such analyses. Question 50. In TORUS, the “Central Island” can be edited to change which characteristic? A Island elevation only
B Island shape and radius C Island color scheme D Island GPS coordinates Answer: B Explanation: Users can modify both shape and radius of the island. Question 51. Which of the following is NOT a typical component of a “Splitter Island”? A Pedestrian refuge B Vehicle deflection barrier C Central island connection D Lane widening area Answer: D Explanation: Splitters separate traffic; they do not provide lane widening. Question 52. When exporting a TORUS design to Civil 3D, which element is synchronized automatically? A Traffic signal phasing B Alignment geometry C Construction schedule D Public outreach documents Answer: B Explanation: Alignments are transferred to Civil 3D corridors. Question 53. Which module focuses on “Safety & Performance Analysis”? A Module 1
B Export the drawing to PDF C Delete all splitter islands D Change the CAD background color Answer: A Explanation: A design vehicle must be assigned for the simulation. Question 57. In TORUS, the term “Design Guideline” refers to: A A set of CAD layer styles B A collection of regional design standards and parameters C A 3D rendering template D A construction contract document Answer: B Explanation: Guidelines embed regional standards such as NCHRP or TAC. Question 58. Which of the following is NOT a typical output of the “Sight Line Analysis”? A Angle of visibility values B Obstructed sight line locations C Vehicle speed profiles D Clearance distances to crosswalks Answer: C Explanation: Speed profiles come from Fastest Path, not sight line analysis. Question 59. Which parameter controls the curvature of the entry leg in a high‑speed roundabout? A Entry lane width B Entry radius (R_entry)
C Central island radius D Number of circulatory lanes Answer: B Explanation: The entry radius defines the curvature for speed accommodation. Question 60. When creating a non‑circular roundabout, which shape is commonly used to fit constrained sites? A Square B Elliptical C Triangular D Pentagonal Answer: B Explanation: Elliptical shapes adapt well to limited right‑of‑way. Question 61. Which analysis detects whether a design vehicle will collide with the central island? A Path Overlap Detection B Fastest Path Evaluation C Vehicle Movement Simulation D Sight Line Analysis Answer: C Explanation: Simulation checks clearance against the island. Question 62. In TORUS, the “Check Vehicle” is typically larger than the “Design Vehicle.” A True B False
