While it is usually more convenient for analysis purposes to show the vehicles as simple rectangular outlines with C.G. and wheel locations, detailed 3D vehicle shapes can also be used. After importing, they can be turned off when desired to decrease screen refresh time.

When 3D scenes are required, they can be created in PC-Crash or imported from a CAD program or a total station DXF file. When defined as a 3D Road Object, each individual 3D slope polygon is recognized by the vehicle tires.

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