Correct answer
40 km/h.
40 km/h, half the general 80 km/h maximum for these lorries on that road. Article 49 permits lower speeds where traffic, vehicle or road conditions prevent higher speed without risk and in other specified cases. Use hazard lights if unable to reach the minimum and there is rear-end collision danger. There is no general duty to leave a conventional road for every justified reduction.
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40 km/h.
50 km/h.
60 km/h.
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