A number plate beginning with WB 31 means the vehicle was registered at Contai and Haldia, West Bengal. Here is what the WB 31 RTO code covers and how to read the full number.
WB 31 RTO details
| RTO code | WB 31 |
|---|---|
| State | West Bengal (WB) |
| Office | Contai and Haldia |
| District | Purba Medinipur |
| Office type | Assistant Regional Transport Office (ARTO) |
| Note | Transport vehicles; shared: Contai 31 to 31M, Haldia 31N to 31Z (official notification 2015). |
| State transport department | Official website |
How to read a WB 31 number plate
Take WB 31 AB 1234 as an example:
- WB: the state or union territory code for West Bengal.
- 31: the RTO number, here Contai and Haldia.
- AB: the series letters, given out in order as numbers run out.
- 1234: the unique number of the vehicle in that series.
More on this in the number plate format guide. The plate colour also tells you the vehicle type; see number plate colours.
Other RTO codes in Purba Medinipur district
WB RTO codes before and after WB 31
| Code | Office | District |
|---|---|---|
| WB 27 | Bangaon | North 24 Parganas |
| WB 28 | Bangaon | North 24 Parganas |
| WB 29 | Tamluk | Purba Medinipur |
| WB 30 | Tamluk | Purba Medinipur |
| WB 32 | Contai and Haldia | Purba Medinipur |
| WB 33 | Medinipur | Paschim Medinipur |
| WB 34 | Medinipur | Paschim Medinipur |
| WB 35 | Kharagpur | Paschim Medinipur |
See all 94 codes in the West Bengal RTO code list.
Services at the WB 31 office
Like other transport offices, the Contai and Haldia office handles vehicle registration, transfer of ownership, hypothecation changes, duplicate RC, fitness for transport vehicles and driving licences. Many of these can now be started online on the official Parivahan Sewa portal, and the office then checks documents or the vehicle where needed. For address, timings and fees, check the state transport department website.
This page is an independent guide, not an official record. For the final word on any registration, use the official Vahan service or ask the RTO. This list has been matched against official transport department records.
Questions people ask
WB 31 RTO is which city?
WB 31 is the RTO code of Contai and Haldia in Purba Medinipur district, West Bengal.
What is the full form of the WB 31 number plate code?
WB stands for West Bengal and 31 is the number of the transport office that registered the vehicle, here Contai and Haldia.
Can I find the owner of a WB 31 vehicle here?
No. This site only explains codes. Vehicle and owner details are protected; registered owners and authorised users can check their own vehicle on the official Parivahan services.