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2. With respect to Article 4.06, the competent authorities may allow on certain inland waterways high-speed vessels to operate in daytime and at a visibility of 1km and more without being fitted with radar equipment and a rate-of-turn indicator.

3. With respect to Article 4.07, the competent authorities may waive the requirement to use Inland AIS or allow exceptions restricting the use of Inland AIS to certain sectors, e.g. berthing places along the fairway.

4. With respect to Article 4.02, the competent authorities may prescribe that the signal used for "Do not approach", consisting in one short and one long blasts, repeated, as described in chapter III of Annex 6, has a different meaning.

Article 9.06 - Chapter 5, “WATERWAY SIGNS AND MARKING”

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