List of Regional Transport Office districts in India

The Andhra Pradesh state government has decided to issue uniform registration numbers for vehicles across Andhra Pradesh. Since February 2019, all new vehicles in Andhra Pradesh are registered with AP-39 code by default. Andhra Pradesh is the first state to implement the "one state-one code" policy. In 2023, the state government has launched new series, AP-40. ==AR—Arunachal Pradesh==

==DD—Dadra and Nagar Haveli and Daman and Diu==

Note: RTO offices from DL10 to DL13 usually register private vehicles with letters like 'A', 'P', 'D', etc. after the core registration series of C and S are exhausted. This is because the 10-digit registration series cannot accommodate CAA or SAA onwards like the other codes. Currently, most public service and first responder vehicles (except e-rickshaws) are registered under the DL1 series. ==GA—Goa==

Due to the official respelling of the state name in English (from "Orissa" to "Odisha"), the Transport Department modified the state letter on the plates with OD substituting OR on 1 September 2012. ==PB—Punjab==

Note * Part of GHMC Hyderabad but not part of Hyderabad Dist. The two-letter state code for Telangana Region in Andhra Pradesh was AP until the State Bifurcation and after the formation of Telangana State, the state was chosen as TS. It continued up to May 2024 before it was changed to TG. The AP and TS codes, however, remain valid. ==TN—Tamil Nadu==

In Tamil Nadu, specific series are exclusively used for certain type of vehicles • All State Transport Corporation vehicles start the series with 'N' or 'AN' • All Government owned vehicles start the series with 'G', 'AG', 'BG', 'CG' or 'DG', Etc., (all Combination of G) No RTO is assigned with number that would add up to '8'. There is no 08,17,26,35,44,53,62,71,80. ==TR—Tripura==