Article 20

1.   The driver shall keep any evidence provided by a Member State concerning penalties imposed or the initiation of proceedings until such time as the same infringement of this Regulation can no longer lead to a second proceeding or penalty pursuant to this Regulation.
2.   The driver shall produce the evidence referred to in paragraph 1 upon request.
3.   A driver who is employed or at the disposal of more than one transport undertaking shall provide sufficient information to each undertaking to enable it to comply with Chapter II.