Trailer hook, also called trailer ball, is a traction device connected to the rear anti-collision beam of the vehicle, which is mainly installed on ordinary household vehicles and self-propelled RVs. Installing a trailer hook can tow small trailers, trailer trailers, and of course, some rear bicycle racks and suitcases can be installed together to increase the carrying space of vehicles. Then why is a good trailer hook called a rogue hook? Because some car owners like to drive fast, they always like to change lanes at will and force traffic jams. However, this kind of car owner knows that he is easy to be rear-ended, so he installs a trailer hook at the rear of the car as an anti-rear-end artifact, or better protects his car when he is rear-ended. However, this has also brought more serious consequences to the rear car. Once the rear-end collision hits the trailer hook, the rear car will definitely be seriously injured, especially some cars. The damage caused makes people call "the front car is simply a rogue", which is completely ulterior motives! Moreover, in many car forums, netizens also spit out "rogue hooks." Therefore, the trailer hook has a new name-"rogue hook". Under normal circumstances, if the car is rear-ended, the rear bumper is basically useless, but the situation is completely different after installing this trailer hook. As can be seen from the figure, because the rear of the front car is equipped with a solid "rogue hook" protruding from the car body, it will not hit the car body itself during the rear-end collision, which reduces the impact damage of the rear car to the front car to some extent. The result is also obvious. Although the trailer hook prevented its own vehicle from being damaged, the damage to the rear vehicle was greatly increased. The front bumper and headlights of the rear car were smashed lightly, and the water tank of the rear car was directly scrapped. Moreover, under the propaganda of many riders and Taobao sellers, the anti-collision effect of trailer hooks has been greatly exaggerated, so many people call it "rogue hooks". Although some hard-core off-road vehicles have their own trailer hooks when they leave the factory, most private cars with trailer hooks are installed privately by the owners. Can I add trailer hooks? Is it illegal modification? Article 56 of the Regulations for the Implementation of the Road Traffic Safety Law of the People's Republic of China clearly stipulates: 1, trucks, semi-trailer tractors and tractors are only allowed to tow one trailer, and the light signal, braking, connection and safety protection devices of the trailer shall meet the national standards; 2. Small passenger cars are only allowed to live in trailers or trailers with a total mass of less than 700kg, and trailers are not allowed to carry people; 3. The loading quality of the trailer towed by the truck shall not exceed the loading quality of the truck itself; 4 large and medium-sized passenger cars, low-speed trucks, tricycles and other motor vehicles are not allowed to tow trailers; It can be seen that small passenger cars are only allowed to tow caravan trailers or trailers with a total mass less than 700 kg, and trailers are not allowed to carry people. Therefore, it is not completely illegal for the owner to install the trailer hook privately, but the shape of the vehicle must be exactly the same as the motor vehicle driving license. In addition, the trailer hook can only be installed and folded to one side when not in use, or it can be manually disassembled and installed when necessary. Otherwise, the vehicle will fail to pass the external inspection because of changing the parameters such as the length of the vehicle, and the traffic police will also ask the owner to restore the vehicle to its original state immediately. It can be seen that the trailer hook is legal as long as it is used within the specified requirements. I also want to remind all car owners who have installed trailer hooks. If they don't need to go out cross-country or tow a trailer, they should remove the trailer hook as soon as possible just because they heard the rumor of preventing rear-end collision. Such a rogue hook is really selfish and will be investigated by the traffic police on duty.