Does the transparency of windscreen have an influence on the field of vision of the driver?

The photo shows a street at night through a dirty, splashed windscreen - the lights of street lamps and headlights blur into patches, and the details of the road disappear. The clarity of the windows does limit the driver's field of view - answer A. Not only in fog (B), and answer C is false.

The Regulation on the technical conditions of vehicles requires the windscreen to give the driver full and clear visibility without distorting the image, and the windscreen and the front side windows to have a light transmission of at least 70 percent; the Road Traffic Act requires the vehicle to give the driver a sufficient field of view. A dirty, misted, frosted or scratched window works like frosted glass: during the day it darkens the image slightly, but at night and against the light every tiny speck of dirt scatters the glare of headlights into a dazzling glow in which you cannot see a pedestrian in dark clothes. Stickers, hanging decorations and window films that are too dark work in the same way. Before driving you clean the windows on both sides, in winter you remove frost from the whole window, not just from a "peephole" in front of you, and you make sure the wipers work and the washer fluid tank is full.

Legal basis: § 8 para. 5 point 1 and 4 of the Regulation on the technical conditions of vehicles and the scope of their necessary equipment; Art. 66 para. 1 point 5 of the Road Traffic Act (Prawo o ruchu drogowym)