In all cases where the State Revenue Commissioner is required by law to issue an identification number for a given vehicle, the identification number plate assigned shall contain such numbers or letters which in the best judgment of the Director of the Motor Vehicle Unit shall best describe the vehicle for identification purposes.
Ga. Comp. R. & Regs. R. 560-10-18-.01
Ga. L. 1961, pp. 68, 71, 83, as amended.