Attention should be paid to the anti slip of trailers during rainy summer days. The possibility of side slip during semi-trailer driving will increase. In addition to good driving habits and skills, good maintenance of brakes and tires is also crucial for safe driving. The vast majority of trailer braking systems use dual line vacuum assisted hydraulic braking. The brake fluid that transmits braking force has extremely strong water absorption. If water enters the brake fluid, during the braking process, the high temperature of friction will generate water vapor. Gas has compressibility, and when compressed in brake fluid, it can cause brake failure or even failure.

Solution: If the vehicle's tires are found to be severely worn and have no tread patterns before the rainy season arrives, they must be replaced. Some people lower their tire pressure during the rainy season in order to increase the friction area between the tire and the ground, thereby increasing adhesion. However, this is actually counterproductive, as it is more likely to cause tire slippage. Maintaining normal tire pressure is crucial.

In addition, some vehicles with severe brake fluid absorption can see water droplets on the brake fluid cup cover. So it is necessary to check the brake fluid during maintenance to ensure the safety of the driver and passengers. Once severe water absorption is found in the trailer brake fluid, it should be sent to a professional repair shop for water removal.