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Clear solution to damp dark signs

Dew have problems reading road signs at night when there's moisture on them?

Road sign

14th August 2006

The Transport Research Laboratory (TRL), based in Berkshire, thinks you might. It discovered that night-time dew makes signs on average 38 per cent harder to read. One tested was 91 per cent more difficult.

Tiny water droplets block the reflective coating on the boards. TRL has now recommended wider use of dew-resistant materials.

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