Rubber speed bumps should be integrated, and adhesive stripes should be added to the outer surface. Each rubber speed bump unit should have a retroreflective material directly in the direction of the vehicle for night identification. There should be no pores on the surface, no obvious scratches, lack of material, uniform color, and no glitter. The surface of the rubber speed bump should be pressed out according to the name of the production unit. If the bolt is connected to the ground, the bolt hole should be a countersunk hole. Rubber speed bumps should be connected in a reliable way. The width and height of the rubber speed belt unit of the cast steel speed belt manufacturer should be approximately trapezoidal or arc. The width should be in the range of (300mm±5mm) ~ (400mm±5mm), and the height should be in the range of (25mm±2mm)-(70mm±2mm). The aspect ratio of rubber speed bumps used on highways and urban roads should not be greater than 0.7.

Core Tip: To simulate the drum, the speed belt manufacturer observes the damage of the rubber reducer, fixes the reducer on the plate, starts the motor, rotates the roller, and repeatedly rolls the rubber reducer to test its service life.

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