How to Allot Registration Marks - Serials ?

The Government allots Registration Marks to respective Regional Transport Offices.

For eg. if TN 90 is alloted to a particular Office, then the R T O has to allot serial marks to his office and also to Unit offices.

For his office he may start with A, B, C etc. For Unit offices he may allot from the last of the alphabets . i.e. Z. If Z is exhausted for the unit office then he may allot AZ, if AZ is exhausted then it is BZ . It goes on like this . Z remains constant for that office.

If there are two or three unit offices he may allot
for unit office 1, Z, AZ, BZ, CZ
for unit office 2, Y, AY, BY, CY.

He should not allot after AZ, AY, or AX
even if there is only one unit office.
The Z factor remains constant for that unit office until all the letters in the alphabet like BZ, CZ, are exhausted.

Refer:- circular no. 45/2007