Master Road Design with AutoCAD Civil 3D!

A: Governing principle: Field verification relies on a common spatial reference before any dimensional check. Applied here, if the site benchmarks don’t match the Civil 3D control, every level comparison is unreliable regardless of pavement quality. Distractor B catches engineers who jump straight to geometry checks without locking down the reference frame.

A: Governing principle: Drawings must maintain traceable relationships between alignment, profile, and stationing. Here, a profile title that doesn’t correspond to the alignment name signals a potential model or sheet reference error. Distractor C tempts those who rely on stationing alone and overlook configuration control.

A: Governing principle: Stopping sight distance equals reaction distance plus braking distance with consistent units. At 80 km/h (22.2 m/s), reaction distance is ~56 m and braking distance ~73 m, giving about 129 m; rounded values land near 120 m depending on constants. Distractor B traps engineers who forget unit conversion but remember the formula shape.

A: Governing principle: Civil 3D derives superelevation elements from the applied criteria, not just what’s labelled. If the criteria file defines runout, it exists in the model even when not explicitly called out on the diagram. Distractor C appeals to users who generalize software behavior without checking the standard configuration.