---
lang: en
title: "Licence plate recognition for gates, car parks and roads"
url: https://nabrio.com/use-cases/licence-plate-recognition
canonical: https://nabrio.com/use-cases/licence-plate-recognition
updated: 2026-10-27
publisher: Nabrio Co., Ltd. (nabrio.com)
---

# Licence plate recognition for gates, car parks and roads

Nara finds licence plates in the camera view and reads them with OCR models that include Thai characters. It checks each plate against an allow-list or booking, opens the barrier, logs time in and out, and alerts on unknown vehicles.

- Sectors: [Buildings and security](https://nabrio.com/industries/buildings-security.md), [Manufacturing](https://nabrio.com/industries/manufacturing.md), [Retail](https://nabrio.com/industries/retail.md), [Smart city](https://nabrio.com/industries/smart-city.md)
- What it takes: Ready to configure. Works with Nara’s built-in models. You set up the zones, rules and outputs.
- Products: [Nara](https://nabrio.com/nara.md)

## The problem

Vehicles entering and leaving a site are logged by hand at the gate, and parking and enforcement need a reliable plate record.

## How it works

- **Input:** Camera at the gate, car park entrance or roadside
- **Process:** Plate detection and OCR (including Thai characters)
- **Action:** Check the allow-list or booking, open the barrier, log time in and out, alert on unknown vehicles

Nara’s plate detector finds the number plate and OCR reads it. The plate is looked up in a database table that holds your allow-list or bookings. Known vehicles open the barrier through digital I/O; unknown vehicles raise an alert. Every read is logged with time in and out, so parking duration and gate records come for free.

## Variations

### Site gates and logistics

Trucks entering and leaving are checked against the allow-list or booking, the barrier opens, and time in and out is logged.

### Car parks

Plate reads give parking duration and recognise VIP or tenant vehicles. Car brand and model recognition adds customer profiling.

### Roads and enforcement

Plate reads support enforcement, access control and investigations, and provide evidence for traffic violations.

## What you need

- A camera positioned for plates at the gate or lane
- A barrier controller with digital I/O, Modbus or TCP/IP
- An allow-list or booking data

## Nara building blocks

- Camera nodes
- Licence plate detection
- OCR
- Database table (allow-list)
- If
- Digital I/O to the barrier
- Notifications

AI models: [Licence plate detection](https://nabrio.com/nara/ai-models.md), [OCR (text reading)](https://nabrio.com/nara/ai-models.md), [Vehicle make and model recognition](https://nabrio.com/nara/ai-models.md)

## What it improves

- Gate throughput
- Manual logging removed
- Vehicle records for security

## Frequently asked questions

### Does it read Thai plates?

Nara includes a plate detector and OCR models with Thai characters. Talk to us about your site conditions, such as camera angle, lighting and vehicle speed.

### Does it need an internet connection?

No. Nara runs on your own hardware on the local network, and images and results stay on-site. Eligible tiers also support offline licensing locked to the hardware.

## Related use cases

- [Traffic violation detection](https://nabrio.com/use-cases/traffic-violation-detection.md)
- [Face recognition access control](https://nabrio.com/use-cases/face-recognition-access-control.md)
- [Intrusion detection](https://nabrio.com/use-cases/intrusion-detection.md)

Talk to us about licence plate recognition: sales@nabrio.com. [Download Nara](https://nabrio.com/download.md).