Correct answer
At an appropriate speed that allows merging safely.
Merging onto a motorway must be carried out following the safety rule of observing, signalling, and executing. First, the driver must observe traffic to ensure they can merge without endangering other drivers. They must also check that the carriageway is clear and that the distance and speed allow the manoeuvre to be performed safely.
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At the maximum speed permitted on the motorway.
At an appropriate speed that allows merging safely.
At the slowest speed to enter safely.
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