A 3D model of an airport warning sign, featuring a red border, white background, black aircraft symbol, and metal pole. It has a classic triangular warning design, high detail, realistic textures, suitable for roadside safety, traffic control, or 3D design assets.

A 3D model of a slope warning road sign, featuring a red and white triangular border, black slope pattern with "10%" text, and a road safety aesthetic. It has low polygon count and clean 3D rendering, suitable for traffic route safety information display.

A 3D model of a Pedestrian Overpass, featuring covered roof, staircases, and metal/glass handrails with a modern and minimalist aesthetic. It has low polygon count and detailed textures, suitable for urban transportation and public places.

A 3D model of a bridge, featuring distinctive arch-shaped towers, steel cables, and red base decorations, with a modern aesthetic. It has low-poly technical characteristics and is suitable for digital art, architectural visualization, or decorative design.