Semi-trailer manufacturers remind drivers of safety precautions. Semi-trailer has a wide field of vision, but there are certain blind spots. Due to the limited field of vision and sight at night, the visibility at night is only 1/8 of that in the daytime, and the lighting is only at a certain level. Our vision and field of vision are limited.
The drive belt is tight. If the transmission belt is adjusted too tightly, it is easy to stretch and deform, and the pulley and bearing are easy to cause bending and damage.