Why it matters: Towing a trailer or caravan: 90 km/u is never 'just always'

Whoever believes 'always 90' either drives too cautiously at 90 near Uitgeest on the A22 with a light caravan when 130 is simply allowed without a trailer, or — more dangerously — tows a heavy horse trailer from a riding school near Limmen with a TMM of 4,000 kg and confidently drives 90, while the ordinary 80 figure applies there and the trailer is being driven above its legal speed limit. The double condition is not a bureaucratic detail — it determines how much braking distance and stability you actually have.