A 3D model of a continuous curve road warning sign, featuring triangular shape with red border, white background, black curve symbol, and metal pole, functional high-visibility warning style. It has detailed, low polygon count, suitable for road safety warnings in traffic.

A 3D model of a traffic warning sign, featuring a triangular red border, white background, and red, yellow, green circular symbols. It has a classic warning style with high detail, suitable for traffic safety scenarios and road design references. （类目纠正：原"Other"不准确，应为"Traffic Warning Sign"）

A 3D model of a pedestrian overpass, featuring metal frame and glass panels, and a minimalist aesthetic. It has clean lines and is suitable for urban public spaces.

A 3D model of a bridge, featuring a red arch, transparent railings, and side staircases, with a modern minimalist aesthetic. It has low polygon count and is suitable for pedestrian access and urban landscape.