Data flow
1. Vehicle's tachograph
The data starts from the vehicle’s tachograph — a device that records important information like driving time, speed, and distance to help ensure drivers follow safety and legal regulations.
To use it, drivers insert their personal driver card into the tachograph before starting a trip. The device then automatically records their activities during the day, depending on what they are doing (for example, driving or taking a break).
2. Telematics device
The telematics device in the vehicle connects to the tachograph through the vehicle’s internal network (CAN bus). It reads the tachograph data and securely sends it to our servers for further processing and analysis.
3. Backend servers & analysis engine
Once the data is received, our backend servers store it and combine it with other information, such as ignition status and downloaded tachograph files.
The analysis engine then applies EU driving time rules to calculate things like remaining driving time, upcoming deadlines, and useful predictions to help manage compliance.
4. Prediction blocks and activity graphs
Finally, the processed data is shown in the Online Map module, when you open a vehicle that has tachograph data and scroll down to the tachograph block.
You can see the analyzed information, including driver activity, driving times, and rest periods. Here you can also switch between the tachograph graph, which shows the vehicle’s data, and the driver’s graph, which focuses on the driver’s activities throughout the day.
Data sources
Source | What it is | When it's used |
CAN bus data | Live tachograph status read through the vehicle's internal network. This is the primary source for most vehicles. | Default for vehicles with a compatible tachograph and telematics device |
Ignition data | Whether the vehicle's engine is on or off. Used to improve accuracy — when the ignition is off, the driver is assumed to be resting. | Combined with CAN data automatically |
DDD file data | Data from downloaded tachograph files (driver card downloads or vehicle unit downloads). More complete than live data. | Merged with live data when available, to fill gaps |
Route data | Derived from the vehicle's GPS trips. Less accurate than tachograph data. | Fallback for vehicles without direct tachograph connection |
How often is the data updated?
Scenario | How fresh the data is |
User opens the vehicle sidebar | Data is calculated fresh at that moment — as recent as the latest data received from the vehicle (usually seconds to a few minutes old) |
Reports and list views | Data is pre-calculated and refreshed approximately every hour |
Vehicle is offline | Data is not updated — predictions become stale and may show "NO DATA" |
The key thing to understand: the freshness of predictions depends entirely on how recently the vehicle sent data. If the vehicle's tracking device is offline, has poor mobile coverage, or the tachograph connection is broken, predictions will be outdated.