Light at day
In some countries like Scandinavia it has been a rule for many years and now is every-day-life to drive with lights on even during day.
What thereby is most important is not "to see well" but "to be seen well".
There are many arguments that strongly support driving during day with lights on.
Daytime Running Light can contribute to...
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reduce the number of accidents as other road users are seen earlier even in bad weather and traffic conditions
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realize following road users earlier in the rear mirror and being able to adapt the own braking reactions according to minimize rear-end collisions
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pedestrians and cyclists better realizing approaching vehicles
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intensify reduced contrasts of the background that would hinder the view, like with clouds, sun reflexes, in areas with forests or trees.
There are studies that estimate the potential of rescuing human lives from a percentage of about 3 to 5 of the yearly serious car accidents.
From 01/2011 onwards, all newly homologised vehicles have to be equipped with daytime running lamps.
Special daytime running lamps can be realized in different ways, from simple bulb technique up to LED technology.
Alternatively also the low beam can be switched on which would mean a higher energy consumption.
