Overstays caught, with evidence

An app that uses NQVCA plate recognition to find vehicles staying in an enforcement zone past the grace period and records each violation with two-photo evidence.

2shots
First and second evidence photos: Auto
Dwell-time judgement: CSV
Violation export

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Windows 10 / 11Ubuntu 24.04 LTS

Enforcement screen — watch-list countdown, violation list, first and second photos

Highlights

What it does

Dwell time, tracked for you

Vehicles first seen in a zone go on a watch list with a live countdown of the remaining grace period.

Two-photo evidence

A second read after the grace period confirms the violation and produces an evidence image with both photos side by side.

Warnings and violations, sent out

Sends an early warning on the first read and a violation event on confirmation, for PA, signboards and other systems.

Violation records

Filter the violation list, cancel, restore or annotate entries, and export them to CSV.

Features

Features at a glance

Enforcement zonesTurn NVR plate-recognition areas into zones with their own grace period.
Weekday and time windowsSet enforcement days and hours per zone, overnight windows included.
Exempt vehiclesListed vehicles are never cited; the list imports and exports as CSV.
Repeat-citation limitA vehicle already cited is not cited again within a set period.
Automatic departureWhen re-reads stop, the vehicle is treated as gone and tracking ends.
Survives restartsDwell state is saved, so first-read evidence survives a restart.
Multiple NVRsHandles plate events from several NVRs, kept apart by device.

SpecificationsShow full specifications

Product description

When a plate is first read in an enforcement zone, the vehicle joins a watch list with a grace-period countdown; if it is read again in the same zone after the grace period, the violation is confirmed. An evidence image combining the first and second photos is saved to the violation list, and early warnings and violation events can be sent to external systems such as PA or signboards. Exempt vehicles, per-zone weekday and time windows, and CSV export are supported.

Confirming violations requires periodic re-recognition to be enabled in the NVR plate-area rule.

General
OS	Windows · Ubuntu (admin PC)
Input	NQVCA plate events (MQTT), multiple NVRs
Evidence photos	NVR best shots (vehicle front), first and second + composite
Records	Violations and evidence stored locally, CSV export