Vehicle inspection is a procedure that every motor vehicle has to go through, and it needs to be done every year. However, many vehicles actually operated are modified by trailer owners. Of course, it doesn't mean that they can't, and some of them don't matter, but some modifications are illegal. As long as it is determined that the vehicle is illegally modified, it will not only fail the annual inspection, but also be punished accordingly, and at the same time bear the responsibility. Next, let's see where the trailer is.

According to the regulations, we will install windshield, water tank, toolbox, spare wheel rack and other equipment on the trailer, and the problem will not be great, provided that the safety of the car and the recognition of the license plate number will not be affected. In this case, there is no need to apply for change registration, which is a normal addition within the scope of law. Of course it's no problem, including the interior of the tractor.

Then, if it is illegally modified, it will be too much. In addition to the above, it is illegal to modify the "structure, structure and characteristics of engine registration". Besides, it is more common.

Changing the body color is the most common one, but according to the "Items and Methods of Motor Vehicle Safety Technical Inspection", when the trailer passes the annual inspection, the body color should be consistent with the photos on the motor vehicle driver's license, and there should be no obvious difference.

There are also changes in vehicle types or uses, which are not allowed. The trailer shall not be changed without authorization. It is usually said that passenger cars are converted into trucks or trucks are converted into passenger cars, ordinary trucks are converted into special ones, and special ones are converted into ordinary ones. At the same time, the sleeper bus was changed to a bus with a seat, and the seat was changed to a sleeper. The opposite type is not allowed to change.

Moreover, the behavior of lengthening or widening the body shape is absolutely not allowed. According to the regulations, the external dimensions of the trailer shall not exceed the standards of GB7285 and GB 1589, and the value recorded in the motor vehicle driving license shall not exceed 3% or150 mm. In addition, the trailer roof is also equipped with a detachable van trailer ceiling bar and a large-size tank.

The modified trailer chassis is also unqualified in the annual inspection. For example, reducing or increasing the number of tires and axles without authorization is illegal modification. The number of trailer parts shall be consistent with the motor vehicle registration information, and shall not be widened or thickened.

In winter, some car owners will choose to install firewood heating or spare fuel tanks to keep their cars warmer and improve the mileage after refueling.

Not to mention the modification of the engine, gearbox, front axle, rear axle and frame, nor can we change the suspension form of the car body or tank and vehicle without authorization.

Moreover, the logo of the car has also changed. In order to pursue individuality, many car owners change the registered features or models of trailers and fail to pass the annual inspection. If they want to be qualified, they can only return to their original state.

Motor vehicles shall not change the external lighting system and signal device, nor shall they add backlight to the vehicle, even if the lighting system is strengthened. Therefore, the trailer with modified headlights or spotlights cannot pass the annual review.

The above also needs the attention of the majority of car owners, so as to ensure that they pass the annual review normally and will not cause greater trouble to their future lives.