A 3D model of a road barrier, featuring red and white chevron patterns, weathered metal frame, and a practical, high-visibility design. It has low polygon count, detailed texture, suitable for road construction sites, temporary traffic management.

A 3D model of a traffic sign, featuring a red-bordered triangular shape with a black 'X' symbol, and a high-visibility warning aesthetic. It has a low-poly design with smooth edges and is suitable for road safety visualization or traffic simulation.

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 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.