Abstract
Vehicles are subject to mandatory periodic technical inspection. In the case of new vehicles, the first technical inspection is carried out three years after the date of production, and the next one after two years. Further checks are carried out annually. Technical inspection is used to check the technical condition of the vehicle, to identify defects that may threaten road safety. Vehicle technical tests are divided into periodic tests and additional studies. Periodic technical inspection consists in checking the correct operation of individual components and systems of the vehicle. During a periodic inspection, the diagnostician checks the compliance of the actual vehicle data with those stored in the registration certificate and checks the technical condition of the vehicle. An additional inspection of the vehicle is carried out after making changes to the design or replacing the elements permitted by law that change the data contained in the registration certificate. An additional test may also be carried out when a vehicle is sent for technical inspection by a traffic authority as a result of suspicion that it poses a threat to road safety or violates environmental requirements. The article discusses the selected elements of the diagnostic line, the results of which were compared with each other. The studies were carried out at four diagnostic stations. For the tests, a front-wheel drive vehicle with a total weight of up to 1510 kg was used. Analyzed are the average measurement results obtained by monitoring the lateral input of the wheel, testing the effectiveness of shock absorbers and braking. After analyzing all the differences in the test results, we can conclude that the repeatability of measurements remains between different diagnostic lines. Moreover, the same vehicle malfunctions were found at all stations. KEYWORDS: TECHNICAL OVERVIEW, PERIODICALLY TEST, ADDITIONAL OVERVIEW, DIAGNOSTIC LINE, MEASUREMENT REPEATABILITY.
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