What are the precautions for using a Roof rack?

For self-driving travel enthusiasts, the roof rack is a good helper for traveling. Almost all self-driving supplies such as mountain bikes, oil drums, and tents can be handed over to the car roof rack. However, although the roof rack is a very effective helper in the process of self-driving travel, there are still many precautions in the use process.

Here is the content list:

• Remember to check the screws securing the roof rack.

• No drag-and-drop roof racks are allowed to load items on the road.

• Roof racks affect fuel consumption.

Remember to check the screws securing the roof rack.

At present, some mainstream SUV models and station wagons have been installed with the original roof rack when they leave the factory. Even if they are not equipped with the original car roof rack, such models generally reserve a place on the roof for the installation of the roof rack. If you want to know if your car has a reserved position for the roof rack, just look at the roof of the car to see if there is a reserved space for the installation of the support and the support position of the support. Generally, there are reserved screws on it. After a long time of use, the screws of the roof rack will become loose, which will not only produce abnormal noise but also affect driving safety. Therefore, if the car owner installs a roof rack, remember to check the screws that fix the roof rack from time to time.

No drag-and-drop roof racks are allowed to load items on the road.

Even if it is a roof rack installed by the car's original factory, car owners should pay attention when they go out to carry items, so as not to be punished if they are not careful. The reporter learned from the traffic management department that the height of the roof rack for passenger cars should not exceed 0.5 meters from the roof and 4 meters from the ground. It is also not allowed if the car owner intends to add a towable roof rack to load items on the road. According to the "Road Traffic Safety Law of the People's Republic of China", passenger cars are not allowed to carry cargo except for the roof rack outside the body and the built-in roof rack. Therefore, it is also not possible to use the drag-and-drop roof rack to hit the road.

Roof racks affect fuel consumption.

Many factors affect the fuel consumption of a car, including driving style, fuel quality, self-weight, and wind resistance coefficient. Among them, the use of roof racks has a certain impact on the self-weight and wind resistance coefficient of the car, thereby increasing the fuel consumption of the vehicle. It is not necessary to explain too much that the roof rack increases the weight of the vehicle because, in addition to the weight of the roof rack, the items placed in the roof rack will also increase the weight of the vehicle itself. In addition, since the roof rack is equivalent to "additional" on the vehicle, it also has a great influence on the wind resistance coefficient of the vehicle. Generally, when a vehicle is moving forward, the wind resistance it receives generally comes from the front. The drag coefficient is a measure of how much a car is affected by air resistance. The smaller the wind resistance coefficient, the less it is affected by the air resistance, and the larger the coefficient, the greater the influence of the resistance. The wind resistance coefficient is directly proportional to the fuel consumption of the car, so the smaller the wind resistance coefficient is, the more helpful the vehicle is to save fuel, and the size of the wind resistance coefficient depends on the shape of the car.

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