Correct answer
At 80 kilometres per hour.
80 km/h. These lanes opened for traffic flow are restricted to motorcycles and cars without trailers; speed must be between 60 and 80 km/h, or lower where established or posted. Use dipped headlights day and night and do not enter adjoining lanes carrying traffic in their normal direction, even to overtake. Lanes opened because of roadworks have a different vehicle-admission rule: vehicles authorised on that road may use them unless expressly prohibited.
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At 80 kilometres per hour.
At 90 kilometres per hour.
At 100 kilometres per hour.
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