A 3D model of a triangular road narrowing warning sign, featuring red border, white background, black narrowing lines, and a metal pole, with a standard, highly visible traffic sign aesthetic. It has a low-poly 3D design and is suitable for road safety warnings to alert drivers of narrowing lanes.

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 road closure and detour sign with barriers, featuring rusted metal, black/yellow striped barriers, orange detour arrow, and "ROAD CLOSED" text, a high-visibility warning aesthetic. It has low polygon count and is suitable for road construction or traffic management scenarios.

A 3D model of a bridge warning sign, featuring triangular red-bordered, white-background sign with black bridge and wave graphics, on a metal pole, and a high-visibility standard design. It has detailed 3D modeling with crisp visuals and is suitable for road safety and traffic management.