In London kwam toen alle verkeer tot stilstand, inclusief hulpdiensten. Het zicht was soms maar één meter, wat voor volwassenen betekent dat je niet meer goed ziet waar je je voeten neerzet.
"The result was that visibility could be down to a metre or so in the daytime. Walking out of doors became a matter of shuffling one’s feet to feel for road curbs, etc. This was made even worse at night because each back street lamp at the time was fitted with an incandescent light-bulb which gave no penetrating light onto the pavement for pedestrians to see their feet, or even the lamp post. Fog-penetrating fluorescent lamps did not become widely available until later on in the 1950s."
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