Why is it good to turn off your full beams for a moment before coming to the crest of a hill when driving in the dark?
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“It is good to dim the headlights for a moment before a hill crest or bend. This will allow you to see oncoming traffic sooner and you have the chance to spot any obstacles as they become silhouetted against the oncoming lights.” (Driving Licence Book, 19th Edition, page 155)
There is also a driving licence book online (2023).
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