Digital tachographs shall ensure the following functions:

• speed and distance measurement;

• monitoring driver activities and driving status;

• monitoring the insertion and withdrawal of tachograph cards;

• recording of drivers’ manual entries;

• calibration;

• automatic recording of the position points referred to in Article 8(1);

• monitoring control activities;

• detection and recording of events and faults;

• reading from data memory and recording and storing in data memory;

• reading from tachograph cards and recording and storing in tachograph cards;

• displaying, warning, printing and downloading data to external devices;

• time adjustment and measurement;

• remote communication;

• company locks management;

• built-in and self-tests.