3. Parties or, in the case of the Union, Member States carrying out an exchange shall return the old card to the authorities of the issuing Party or, in the case of the Union, the issuing Member State and indicate the reasons for so doing.

4. Where a Party or, in the case of the Union, a Member State replaces or exchanges a driver card, the replacement or exchange, and any subsequent replacement or exchange, shall be registered in that Party or, in the case of the Union, in that Member State.

Article 13

Electronic exchange of information on driver cards

1. In order to ensure that an applicant does not already hold a valid driver card, Parties or, in the case of the Union, Member States shall maintain national electronic registers containing the following information on driver cards for a period at least equivalent to the period of validity of those cards:

— surname and first name of the driver;

— birth date and, if available, place of birth of the driver;

— valid driving licence number and country of issue of the driving licence (if applicable);

— status of the driver card; and

— driver card number.

2. The electronic registers of the Parties or, in the case of the Union, the Member States shall be interconnected and accessible throughout the territory of the Parties, using the TACHOnet messaging system or a compatible system. In the case of the use of a compatible system, the exchange of electronic data with the other Party shall be possible through the TACHOnet messaging system.

3. When issuing, replacing and, where necessary, renewing a driver card, Parties or, in the case of the Union, Member States shall verify through electronic data exchange that the driver does not already hold another valid driver card. The data exchanged shall be limited to the data necessary for the purpose of this verification.

4. Control officers may have access to the electronic register in order to check the status of a driver card.

Article 14

Settings of tachographs

1. Digital tachographs shall not be set in such a way that they automatically switch to a specific category of activity when the vehicle's engine or ignition is switched off, unless the driver remains able to choose manually the appropriate category of activity.

2. Vehicles shall not be fitted with more than one tachograph, except for the purposes of field tests.

3. Each Party shall forbid the production, distribution, advertising and/or selling of devices constructed and/or intended for the manipulation of tachographs.

Article 15

Responsibility of road haulage operators

1. Road haulage operators shall be responsible for ensuring that their drivers are properly trained and instructed as regards the correct functioning of tachographs, whether digital, smart or analogue, shall make regular checks to ensure that their drivers make correct use thereof, and shall not give to their drivers any direct or indirect incentives that could encourage the misuse of tachographs.