Correct answer
Yes, to avoid the possibility of dazzling through the rear-view mirror.
Yes, change to dipped beam when your lights may dazzle the driver ahead through mirrors, even if you intend to overtake. Adapting lights reduces the risk but does not alone guarantee dazzling never occurs: headlight alignment and loading also matter. Keep a safe gap and avoid dazzling any road user.
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No, as it is neither necessary nor advisable.
Only if you do not intend to overtake.
Yes, to avoid the possibility of dazzling through the rear-view mirror.
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