How does a black box in a car work?
A black box in a car is no longer just for airplanes or insurance companies. More and more entrepreneurs and fleet managers are using this smart device to better monitor their vehicles and employees, save costs, and comply with tax requirements. But what exactly is a black box, and how does it work?
What is a black box in a car?
A black box is a small, discreet device installed behind a car's dashboard. The device continuously collects data about the vehicle: from speed and location to the driver's behavior and the time spent at a specific location. The information is automatically stored and can be viewed via an online portal or mobile app.
The black box acts as a digital assistant that processes real-time data and converts it into clear reports. Ideal for trip registration, mileage registration en time tracking.
How does a black box work?

The operation of a black box in the car is based on GPS technology, an acceleration sensor, and a connection to the vehicle's electrical system. As soon as the car starts, the device automatically begins recording important data. The main functions are:
- Live tracking: the current location of your car is visible at any time via the app or the online portal
- Trip registration: every trip driven is accurately recorded, including start and end time, distance, route, and intermediate stops
- Mileage registration: the system keeps exact track of how many kilometers are driven per trip or per day
- Time on location: you see how long an employee has been at a customer location
- Insight into driving behavior: data such as speed, braking behavior, and acceleration are measured, which helps improve safety and economical driving
- Automatic reporting: all data is processed into clear overviews that are easy to download, for example for the Tax and Customs Administration
A black box operates fully automatically: manually maintaining data is a thing of the past. Data is securely stored in the cloud, in accordance with GDPR requirements and with the Quality Mark for Travel Registration Systems. Do you want to know more about the technique? Read our article about how GPS works.
Why choose a black box?
Clear prices without surprises
The benefits of a black box in your car are significant, especially for companies with a fleet or self-employed individuals who want to keep their administration accurate:
- Time saving: automatic trip registration saves a lot of time on administration
- Tax-proof: meets the requirements of the Tax and Customs Administration and helps prevent tax additions
- Efficient fleet management: you always know where your vehicles are and how they are being deployed
- Cost reduction: insight into driving behavior leads to more economical driving and less wear and tear
- Live insight: you will never lose sight of your field service again
- Customized reporting: from hours worked to driving behavior, everything clearly organized in one portal
Installation and ease of use
Installing a black box in your car is quick and easy. Our technicians professionally install the system at your location throughout the Netherlands. Afterward, you won't notice it, but you will have 24/7 insight into your vehicles. Because the system cannot be manually switched off, the recording is always reliable and complete.
Read more about the TrackJack blackbox and what he can do for your situation.
Frequently asked questions about car black box
What is the difference between a black box and a GPS tracker?
A black box is a fixed, professionally installed GPS tracker. A separate GPS tracker can also be connected plug-and-play via the OBD2 port. The black box is invisible, non-removable, and always active. Read more about the differences between GPS trackers.
Is an employer allowed to install a black box in a company car?
Yes, provided employees have been informed about this and private trips are kept private. Read more about GPS tracking and privacy.
Can I also see how employees drive?
Yes. The black box measures speed, braking behavior, and acceleration. This provides insight into driving behavior and helps improve safety and fuel consumption.
How long is the data stored?
TrackJack automatically retains data for 7 years, in accordance with the tax retention obligation. Read more about the retention period for your records.
Has the mileage log from a black box been approved by the Tax and Customs Administration?
Yes. TrackJack works with the Trip Registration Systems Quality Mark, which means the Tax and Customs Administration accepts the registration without question. Read more about the Quality Mark for Travel Registration Systems.
Want to have a black box installed at your location?
TrackJack professionally installs the black box in your car throughout the Netherlands. Always online insight, automatic trip logging, and 7 years of data storage.
Related knowledge base articles
- All about GPS tracking
- How does GPS work?
- Tracking a car: here's how to do it
- Car GPS tracker: costs and benefits
- Car GPS tracker vs AirTag: what is the difference?
- Quality Mark for Travel Registration Systems
- GPS tracking and privacy
Tip: With the TrackJack PRO Fiscal Automatically register all your trips – tax-approved and recognized by the Tax Authorities. View the PRO Fiscaal in our webshop →