As per Rule, 80 of Andhra Pradesh Vehicles Rules 1989, the list of RTO Numbers to be assigned to the registered vehicles.
District wise AP RTO Office Code Table
| SI. No. | Registering Authority | Code Number |
| 1 | Adilabad | 01 |
| 2 | Ananthapur | 02 |
| 3 | Chittoor | 03 |
| 4 | Kadapa | 04 |
| 5 | East Godavari | 05 & 06 |
| 6 | Guntur | 07&08 |
| 7 (i) | Hyderabad | 09, 10, 11, 12, 13 & 14 |
| 7 (ii) | APSRTC Vehicles | All the series starting with ‘Z’ |
| 7 (iii) | Police Department Vehicles | Under ‘9’ starting with ‘P’ |
| 8 | Karimnagar | 15 |
| 9 | Krishna | 16, 17, 18 & 19 |
| 10 | Khammam | 20 |
| 11 | Kurnool | 21 |
| 12 | Mahaboobnagar | 22 |
| 13 | Medak | 23 |
| 14 | Nalgonda | 24 |
| 15 | Nizamabad | 25 |
| 16 | Nellore | 26 |
| 17 | Prakasam | 27 |
| 18 | Rangareddy | 28 & 29 |
| 19 | Srikakulam | 30 |
| 20 | Visakhapatnam | 31, 32, 33 & 34 |
| 21 | Vizianagaram | 35 |
| 22 | Warangal | 36 |
| 23 | West Godavari | 37 & 38 |