Vehicle plate numbers

The National Road Traffic Regulations 2012 (Official Gazette No. 101) set two plate formats that naija-data checks:

Format	Example	Parts
standard	KJA-123AB	3 letters (Local Government code), 3 digits, 2 letters
dealer	DKN 135 3	D + state code (KN = Kano), 3 digits, 1 character

JavaScript

import { parsePlate, plateError, isValidPlate } from "naija-data";

parsePlate("kja 123 ab")?.display;          // "KJA-123AB" (store or show this)
parsePlate("DKN 135 3")?.state_code;        // "KN"
plateError("AB-123-CD");                    // "unknown_format"
isValidPlate("KJA-123AB", ["standard"]);    // true

Python

import naija_data as ng

ng.parse_plate("kja 123 ab").display     # 'KJA-123AB'
ng.parse_plate("DKN 135 3").state_code   # 'KN'
ng.plate_error("AB-123-CD")              # 'unknown_format'

Zod

import { plateSchema } from "naija-data/zod";

plateSchema().parse("kja 123 ab");          // "KJA-123AB"

REST API

curl https://naija-data-api.asgatcreation.workers.dev/v1/plates/kja-123ab
curl https://naija-data-api.asgatcreation.workers.dev/v1/plates   # plate colours by category

Error codes: empty, invalid_characters, unknown_format, unknown_state (a dealer plate whose state code does not exist).

Plate colours

plateCategories() / plate_categories() lists the colours the Regulations set for each category, for example red lettering for commercial vehicles, blue for private, green for government.

Which LGA is KJA?

The first three letters are a Local Government code set by the FRSC (reg. 39(5)). The FRSC does not publish the list, and the lists online have no official source, so naija-data does not map plates to LGAs yet. It checks the format only. Government, armed forces and diplomatic plates are not checked.