Missouri License Plates
Apportioned or PRP plates are used on trucks and buses operating in more than one jurisdiction as part of the International Registration Plan (IRP). Missouri issues IRP plates captioned in several truck weight classes (e.g. 24, 36, 80) as well as several bus seating (e.g. 37, 45) capacities.
Missouri does not use the letter "O" on passenger plates, but the number zero (0) is used in the third position, or first numeric position on some plates. There are only two numbers in the 2018 base format, and they appear in the third and fifth position on passenger plates.
Numbering follows a basic 01-99 progression, with the numbers progressing ahead of the letter. Remember that two numbers only are used on these plates, and they always appear in the third and fifth position.
Using January as an example, the first plate would be AA0 A1A.
AA0 A1A > AA0 A9A
AA1 A0A > AA1 A9A
AA2 A0A > AA2 A9A
and so on through
AA9 A0A > AA9 A9A
then
AA0 A1B > AA0 A9B
AA1 A0B > AA1 A9B
AA2 A0B > AA2 A9B
and so on through
AA9 A0B > AA9 A9B
After AA9 A9Z would come AA0 B1A
And then after AA9 Z9Z would come AB0 A1A
Missouri's bluebird base was issued between June 16, 2008 and late 2018.