ANNEX I CRequirements for construction, testing, installation, and inspection
4.CONSTRUCTION AND FUNCTIONAL REQUIREMENTS FOR TACHOGRAPH CARDS
4.5Data storage
4.5.4Workshop card
4.5.4.2Tachograph generation 2 application (not accessible to first generation vehicle unit)
4.5.4.2.10Daily work periods start and/or end data
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The workshop card shall be able to hold at least 3 pairs of such records.