AutoTURN 2025: The Essential Tool for Vehicle Swept Path Analysis

AutoTURN 2025 is the definitive software for analyzing and simulating the turning movements of vehicles in transportation and site design projects. As a standalone application and plugin for AutoCAD, MicroStation, and BricsCAD, it enables civil engineers, transport planners, and architects to ensure that roadways, intersections, loading docks, and parking facilities can safely and efficiently accommodate a wide range of vehicle types—from passenger cars to large emergency vehicles, buses, and articulated trucks.

Core Function: Simulating Real-World Vehicle Maneuvers
The software’s primary function is to calculate and graphically display the precise swept path (the envelope created by all points on the vehicle during a turn) and clearance envelope for a user-defined vehicle performing a specific maneuver (turning, reversing, roundabout navigation) on a designed roadway or site plan. This prevents design errors that could lead to unsafe or non-functional infrastructure.

Key Analysis & Simulation Features:

1. Extensive Vehicle Library & Customization

  • Comprehensive Library: Includes a vast library of pre-defined standard vehicles (AASHTO, state DOT standards, international vehicles) such as fire trucks, semi-trailers, buses, and aircraft.

  • Custom Vehicle Builder: Allows users to create and save custom vehicle configurations with specific dimensions, axle configurations, and steering properties.

2. Advanced Simulation Scenarios

  • Complex Maneuvers: Simulates standard turns, U-turns, roundabout navigation, reverse movements, and parking maneuvers.

  • Dynamic Simulation: Animates the vehicle’s movement along the user-drawn path, showing the full turning process and identifying potential conflicts with curbs, islands, signs, or buildings.

  • 3D Analysis: (In relevant versions) Provides 3D swept path analysis to account for vertical clearances and ramp geometries.

3. Integration & Reporting

  • Direct CAD Integration: Works seamlessly within the CAD environment, using the actual drawing geometry. Paths and swept areas are drawn directly into the CAD file as polylines or 3D solids.

  • Clearance Checking: Automatically checks for collisions between the vehicle envelope and objects in the drawing.

  • Reporting Tools: Generates detailed reports with vehicle dimensions, turning radii, and key simulation parameters.

AutoTURN 2025
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