The registration number consisted of a provincial designation, dash and a (maximum) four-digit number.
Cab cars have four-digit road numbers beginning with 11 (e.g., 1101).
However, from then until 1967, a similar four-digit system was used internally.
These follow a broadly similar pattern to the four-digit numbers, although there are exceptions.
Officers had a four-digit code number for their career field and specialty.
For example, a four-digit multimeter would automatically select an appropriate range to display 1.234 instead of 0.012, or overloading.
To disarm the 6 points of immobilisation, the correct four-digit code must be entered into the keypad.
From left to right, the plate has the vehicle class, hangeul prefix, and four-digit serial number.
