A practical test of the vehicle driven by the driver alone is not required if a calculation shows that the distribution of the mass on the braked wheels allows a mean fully developed deceleration of at least 2,5 m/s2 or a stopping distance S 0,1.V + V2/65 to be achieved with each of the single axle braking devices.
Preskus vozila, ki je obremenjeno samo z voznikom, ni nujno potreben, če je z izračunom mogoče dokazati, da je masa tako porazdeljena na obe kolesi, opremljeni z zavoro, da vsaka posamična zavorna naprava omogoča srednji polni pojemek najmanj 2,5 m/s2 ali zavorno pot S 0,1.V + V2/65.