A tachograph is a device installed on vehicles that automatically records vehicle and driver data, such as distance, speed, and driver activities. The stored data can be periodically downloaded using the RDD (Remote Data Download) feature for further monitoring and reporting. The Tachograph module helps fulfill legal obligations by managing the tacho archiving requirements of a company.
The Tachograph module contains legacy data that cannot be edited.
Fleet overview #
After a tacho driver or company card is registered and installed for an organization by ZF, users can view and filter alerts by category, severity, and item (vehicles or drivers) on the Fleet overview page.
Only an administrator can configure Tachograph settings:
- Set the period for the session download through the scheduler for the session data to be recorded automatically
- Change alert settings for all categories
- Enable or disable RDD settings
For more information, see Tachograph settings.
From the left navigation pane, click Tachograph . The Fleet overview page is displayed.
The fleet overview page presents vehicle or driver records in a tabular form. Click a record to view the Vehicle or Driver details pane.
Alerts generated are visually presented in the Alerts column.
Records for which no alerts are generated are marked as ‘No issues’.
In this example, three alerts are generated: card expiration, archive integrity, and archive delay. Two alerts are tagged as critical while one is a warning.
For more information about the available columns, see Available columns below.
Available columns #
Column |
Description |
Alerts |
Alerts triggered after the threshold values for parameters related to card renewal of Tacho company and Tacho driver cards, archive health, archive delay, and RDD session are breached. |
Identification |
Driver name or vehicle number as it appears on the driver’s ID card or the vehicle license plate. |
Last archiving |
Date when an archive file was last downloaded. NOTE:
Download the archived data according to the default download frequency settings:
|
Last source |
Tool from which the archive has originated
|
Next RDD (d) |
Day when the next RDD session is due |
Driver card exp. (d) |
Indicates the number of days that have passed since the driver’s tachograph card was due for renewal, or the number of days for which the card will remain valid before it must be renewed NOTE:
An expired card cannot be used in a tachograph.If the tacho card renewal is overdue, the number of days will be highlighted in red with a + symbol, else it will be displayed in grey. |
Company card exp. (d) |
Indicates the number of days that have passed since the company tacho card was due for renewal, or the number of days for which the card will remain valid before it must be renewed NOTE:
An expired card cannot be used for authentication. |
Last RDD session |
The last date of driver or vehicle activity data downloaded to the SCALAR platform. NOTE:
It is recommended to schedule automatic RDD session data downloads every 7 days for drivers and every 30 days for assets (vehicles). |
Actions |
Click |
Last activity |
Date when the last activity was recorded by the tachograph for the drivers or vehicles |
Last RDD session |
Date when the last RDD session was recorded by the tachograph |
Last successful RDD |
Date when the last RDD session was successfully recorded by the tachograph and an archive downloaded |
Next expiration date |
The expiration date of the item’s tacho card NOTE:
The tacho company card and the tacho driver card both must be renewed every five years. |
See also Customize Column View.
Left side pane #
Within the Tachograph module, the left side pane visualizes alert categories enabling users to quickly filter records based on criticality, category, and items in alert.
Hover over each segment, bar, or card to view the detailed information as shown in the image below.
Click a segment of the pie chart, or a bar or card to filter the fleet overview based on that selection.
Click again to remove the filter criterion.
Alerts ratio by criticality |
The pie chart visualizes the alerts of the entire fleet. Hover over a segment to view the breakdown of alerts for drivers and vehicles, categorized as critical, warning, or no issues. |
Alerts ratio by category |
The Alert by category tabs provide information about any critical or warning errors related to the categories mentioned below that must be addressed. These alert categories are displayed as tabs. Hover over every alert category to view the breakdown of alerts for drivers and vehicles: NOTE:
To view RDD session information, the RDD settings must be enabled by an administrator on the asset or organizational level EXAMPLE: To quickly filter alerts by category, click the respective category tab in the sidebar. For example, to view alerts related to tacho cards that are past their expiration date, click the Tacho Card Expiration tab. All records with expired tacho cards will be listed. |
Items in alert |
The cards display all items with an alert: vehicles and drivers. |
Detail pane – View archive file details #
The RDD sessions are downloaded and archived automatically on the Fleet overview page at set intervals.
- From the left navigation pane, click Tachograph
. The Fleet overview page is displayed.
- Select the required driver or vehicle record. The Driver (or Vehicle) details pane for the selected driver or vehicle is displayed.
- Click Archives to open the Archives pane, and then select the required option from the period selection list.
- Select the required archive from the Archives pane.
The archived file details are displayed on the Archive pane.
Available fields in the details pane #
UI element |
Description |
Name and format of the archive |
|
Method of upload: RDD or manual |
|
The generated file version Two file versions can be generated: Generation 1 and Generation 2. The Generation 2 file version contains more data about the archive. |
|
Date and time of the generated archive file |
|
The activity period of the archive |
The error below is an example of an integrity issue on an archived file, which requires appropriate action by the fleet administrator.
Click Export to export the RDD archived file. The file is downloaded to the Downloads folder on your computer.
For more information, see Export Downloaded Session Files.
View session details #
You can view the RDD session records of drivers and vehicles for a specified period.
- On the Fleet overview page, select the required driver or vehicle record. The Driver (or Vehicle) details pane for the selected driver or vehicle is displayed.
- Click Sessions, and then select the option from the period selection list. In this example, we select All. The Sessions pane listing the RDD sessions is displayed for the selected period.
- Click the required session to view the details.
- To search session records for a custom period, select the Custom date range option from the period selection list, select a date range from the calendar picker, and then click Close.
- There is no restriction for historical date selection; however, this depends on data availability.
Search an item #
On the Fleet overview page, you can search for a specific item (vehicle or driver details) by entering the name of the driver or license plate in the Search box. Click the required driver or vehicle record to open the details pane, and then click Archives.
For more information, see View Archive File Details.
Enter at least three characters to initiate a search operation.
Filter pane #
To narrow search results, you can filter driver or vehicle records to view specific alerts based on their severity level, category, and record type.
- On the Fleet overview page > click Filters. The Filters pane is displayed.
- Select the required checkboxes. The results matching the filter criteria are displayed on the Fleet overview page.
In the example below, the fleet overview is filtered on Critical alerts, Archive integrity errors and vehicle records. The number of applied filters is displayed on the Filters button.
You can select multiple filters. To clear all the applied filters, click Reset all.
Customize column view #
You can customize the view on the Fleet overview page to display or hide specific columns.
On the Fleet overview page > click Columns, and then select the checkboxes for the column headers from the Column display list. The view on the page is rendered based on the selected columns.
To clear all the applied filters, click Reset.
Export downloaded session files #
Archives are legal historical data files. These files provide information about the activity data of the drivers and vehicles.
- From the left navigation pane, click Tachograph
. The Fleet overview page is displayed.
- Select the required record. The Driver (or Vehicle) details pane for the selected driver or vehicle is displayed.
- Click Archives to open the Archives pane.
- Click Export. The RDD file is downloaded to the default Downloads folder on your computer.
You must download the archive files manually because the job cannot be scheduled. You can export multiple files at a time.
If no archived data is available for the selected period, the RDD session file will not be generated after you click Export.

File formats #
This table provides a brief overview of the supported file formats.
While exporting a file, you can choose to download it in the required format to comply with your country-specific requirements.
| File format | Description |
| DDD (Digital Data Distiller) | Generic file format valid in all countries |
| Original | The original file format of the archive file |
| C1B/V1B | File format valid only in France |
| TGD | File format valid only in Spain |
To export or manually request an RDD session for specific drivers or vehicles, select the checkboxes next to the required records. The options to force an RDD session and export RDD session files are activated.
Import an RDD archive #
You can import an RDD archive file from the SCALAR platform to verify its integrity. These files can be securely stored, and the tachograph data can be shared with other relevant modules, such as Duty Time or Infringements. The downloaded archived files are in a legally specified format and can only be interpreted by specialized software.
- On the Fleet overview page, click Import. The File Explorer is displayed.
- Select the required file, and click Open. The selected archived file is uploaded. An acknowledgment message is displayed on the Import details pane.
- In the File Explorer, multiple encrypted files are available in the downloaded session folder. You can import single or multiple files at a time.
- Once a session file is uploaded to the Import details pane, you can search for the specific record in the archive log on the Fleet overview page.



















